diff --git a/sys/dev/pcm/ac97.c b/sys/dev/pcm/ac97.c
index b3da9cb819e..18c38e7d885 100644
--- a/sys/dev/pcm/ac97.c
+++ b/sys/dev/pcm/ac97.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/pcm/ac97.h b/sys/dev/pcm/ac97.h
index c3460a20f27..b38d3443cd1 100644
--- a/sys/dev/pcm/ac97.h
+++ b/sys/dev/pcm/ac97.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 typedef u_int32_t (ac97_read)(void *devinfo, int regno);
diff --git a/sys/dev/pcm/channel.c b/sys/dev/pcm/channel.c
index dd383e5475a..4c91e44c33c 100644
--- a/sys/dev/pcm/channel.c
+++ b/sys/dev/pcm/channel.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/pcm/channel.h b/sys/dev/pcm/channel.h
index 8667a9f42ed..b8d92d0bf0f 100644
--- a/sys/dev/pcm/channel.h
+++ b/sys/dev/pcm/channel.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 int chn_write(pcm_channel *c, struct uio *buf);
diff --git a/sys/dev/pcm/datatypes.h b/sys/dev/pcm/datatypes.h
index 50928f608ad..c4259135f5b 100644
--- a/sys/dev/pcm/datatypes.h
+++ b/sys/dev/pcm/datatypes.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 typedef struct _snd_mixer snd_mixer;
diff --git a/sys/dev/pcm/dsp.c b/sys/dev/pcm/dsp.c
index a868e92f258..fcee2fc5e37 100644
--- a/sys/dev/pcm/dsp.c
+++ b/sys/dev/pcm/dsp.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <sys/param.h>
diff --git a/sys/dev/pcm/dsp.h b/sys/dev/pcm/dsp.h
index 27b7e3d37a5..c1ce0738c60 100644
--- a/sys/dev/pcm/dsp.h
+++ b/sys/dev/pcm/dsp.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 int dsp_open(snddev_info *d, int chan, int oflags, int devtype);
diff --git a/sys/dev/pcm/fake.c b/sys/dev/pcm/fake.c
index d050eef514c..b04eea7ce04 100644
--- a/sys/dev/pcm/fake.c
+++ b/sys/dev/pcm/fake.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include "pcm.h"
diff --git a/sys/dev/pcm/feeder.c b/sys/dev/pcm/feeder.c
index 3e51d749458..7c6ebebff7c 100644
--- a/sys/dev/pcm/feeder.c
+++ b/sys/dev/pcm/feeder.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/pcm/isa/mss.c b/sys/dev/pcm/isa/mss.c
index 0380121240b..cc34ddc66b1 100644
--- a/sys/dev/pcm/isa/mss.c
+++ b/sys/dev/pcm/isa/mss.c
@@ -25,7 +25,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/pcm/isa/mss.h b/sys/dev/pcm/isa/mss.h
index ab41964fbf7..8db435ecea2 100644
--- a/sys/dev/pcm/isa/mss.h
+++ b/sys/dev/pcm/isa/mss.h
@@ -317,7 +317,7 @@ MIX_NONE(SOUND_MIXER_LINE3),
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id$
+ * $FreeBSD$
  */
 
 /*
diff --git a/sys/dev/pcm/isa/sb.c b/sys/dev/pcm/isa/sb.c
index 2a8d3366c84..7ed18d2d7f1 100644
--- a/sys/dev/pcm/isa/sb.c
+++ b/sys/dev/pcm/isa/sb.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/pcm/mixer.c b/sys/dev/pcm/mixer.c
index 0a7c918be76..9017e6ca9e3 100644
--- a/sys/dev/pcm/mixer.c
+++ b/sys/dev/pcm/mixer.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/pcm/mixer.h b/sys/dev/pcm/mixer.h
index 82a8f26c6f4..aac98a17a73 100644
--- a/sys/dev/pcm/mixer.h
+++ b/sys/dev/pcm/mixer.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 extern int mixer_init(snddev_info *d, snd_mixer *m, void *devinfo);
diff --git a/sys/dev/pcm/pci/aureal.c b/sys/dev/pcm/pci/aureal.c
index 49900e613a1..291f68e7a28 100644
--- a/sys/dev/pcm/pci/aureal.c
+++ b/sys/dev/pcm/pci/aureal.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include "pci.h"
diff --git a/sys/dev/pcm/pci/aureal.h b/sys/dev/pcm/pci/aureal.h
index c5bcb29985b..a89e4c9aede 100644
--- a/sys/dev/pcm/pci/aureal.h
+++ b/sys/dev/pcm/pci/aureal.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #ifndef _AU8820_REG_H
diff --git a/sys/dev/pcm/pci/es1370.c b/sys/dev/pcm/pci/es1370.c
index f0f14130e69..778a06b70d8 100644
--- a/sys/dev/pcm/pci/es1370.c
+++ b/sys/dev/pcm/pci/es1370.c
@@ -37,7 +37,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *	$Id: es1370.c,v 1.4 1999/05/09 17:06:45 peter Exp $
+ * $FreeBSD$
  */
 
 #include "pci.h"
diff --git a/sys/dev/pcm/pci/es1370.h b/sys/dev/pcm/pci/es1370.h
index 6c981e391f0..a1adc354be7 100644
--- a/sys/dev/pcm/pci/es1370.h
+++ b/sys/dev/pcm/pci/es1370.h
@@ -18,7 +18,7 @@
  * 4. Modifications may be freely made to this file if the above conditions
  *    are met.
  *
- *	$Id: es1370_reg.h,v 1.1 1998/12/31 08:14:27 luigi Exp $
+ * $FreeBSD$
  */
 
 #ifndef _ES1370_REG_H
diff --git a/sys/dev/pcm/pci/es137x.c b/sys/dev/pcm/pci/es137x.c
index f0f14130e69..778a06b70d8 100644
--- a/sys/dev/pcm/pci/es137x.c
+++ b/sys/dev/pcm/pci/es137x.c
@@ -37,7 +37,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *	$Id: es1370.c,v 1.4 1999/05/09 17:06:45 peter Exp $
+ * $FreeBSD$
  */
 
 #include "pci.h"
diff --git a/sys/dev/pcm/pci/es137x.h b/sys/dev/pcm/pci/es137x.h
index 6c981e391f0..a1adc354be7 100644
--- a/sys/dev/pcm/pci/es137x.h
+++ b/sys/dev/pcm/pci/es137x.h
@@ -18,7 +18,7 @@
  * 4. Modifications may be freely made to this file if the above conditions
  *    are met.
  *
- *	$Id: es1370_reg.h,v 1.1 1998/12/31 08:14:27 luigi Exp $
+ * $FreeBSD$
  */
 
 #ifndef _ES1370_REG_H
diff --git a/sys/dev/pcm/pci/t4dwave.c b/sys/dev/pcm/pci/t4dwave.c
index 5404fe202a3..795f4d42c54 100644
--- a/sys/dev/pcm/pci/t4dwave.c
+++ b/sys/dev/pcm/pci/t4dwave.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include "pci.h"
diff --git a/sys/dev/pcm/pci/t4dwave.h b/sys/dev/pcm/pci/t4dwave.h
index 31f33406fb5..1e68c86e383 100644
--- a/sys/dev/pcm/pci/t4dwave.h
+++ b/sys/dev/pcm/pci/t4dwave.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #ifndef _T4DWAVE_REG_H
diff --git a/sys/dev/pcm/sound.c b/sys/dev/pcm/sound.c
index 102b87aa75d..570e51f3548 100644
--- a/sys/dev/pcm/sound.c
+++ b/sys/dev/pcm/sound.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include "opt_devfs.h"
diff --git a/sys/dev/pcm/sound.h b/sys/dev/pcm/sound.h
index 5d17624640c..72b41a5e237 100644
--- a/sys/dev/pcm/sound.h
+++ b/sys/dev/pcm/sound.h
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #ifdef KERNEL
diff --git a/sys/dev/sound/isa/mss.c b/sys/dev/sound/isa/mss.c
index 0380121240b..cc34ddc66b1 100644
--- a/sys/dev/sound/isa/mss.c
+++ b/sys/dev/sound/isa/mss.c
@@ -25,7 +25,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/sound/isa/mss.h b/sys/dev/sound/isa/mss.h
index ab41964fbf7..8db435ecea2 100644
--- a/sys/dev/sound/isa/mss.h
+++ b/sys/dev/sound/isa/mss.h
@@ -317,7 +317,7 @@ MIX_NONE(SOUND_MIXER_LINE3),
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id$
+ * $FreeBSD$
  */
 
 /*
diff --git a/sys/dev/sound/isa/sb.c b/sys/dev/sound/isa/sb.c
index 2a8d3366c84..7ed18d2d7f1 100644
--- a/sys/dev/sound/isa/sb.c
+++ b/sys/dev/sound/isa/sb.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/sound/isa/sb16.c b/sys/dev/sound/isa/sb16.c
index 2a8d3366c84..7ed18d2d7f1 100644
--- a/sys/dev/sound/isa/sb16.c
+++ b/sys/dev/sound/isa/sb16.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/sound/isa/sb8.c b/sys/dev/sound/isa/sb8.c
index 2a8d3366c84..7ed18d2d7f1 100644
--- a/sys/dev/sound/isa/sb8.c
+++ b/sys/dev/sound/isa/sb8.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/sound/pci/aureal.c b/sys/dev/sound/pci/aureal.c
index 49900e613a1..291f68e7a28 100644
--- a/sys/dev/sound/pci/aureal.c
+++ b/sys/dev/sound/pci/aureal.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include "pci.h"
diff --git a/sys/dev/sound/pci/aureal.h b/sys/dev/sound/pci/aureal.h
index c5bcb29985b..a89e4c9aede 100644
--- a/sys/dev/sound/pci/aureal.h
+++ b/sys/dev/sound/pci/aureal.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #ifndef _AU8820_REG_H
diff --git a/sys/dev/sound/pci/es137x.c b/sys/dev/sound/pci/es137x.c
index f0f14130e69..778a06b70d8 100644
--- a/sys/dev/sound/pci/es137x.c
+++ b/sys/dev/sound/pci/es137x.c
@@ -37,7 +37,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  * OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- *	$Id: es1370.c,v 1.4 1999/05/09 17:06:45 peter Exp $
+ * $FreeBSD$
  */
 
 #include "pci.h"
diff --git a/sys/dev/sound/pci/es137x.h b/sys/dev/sound/pci/es137x.h
index 6c981e391f0..a1adc354be7 100644
--- a/sys/dev/sound/pci/es137x.h
+++ b/sys/dev/sound/pci/es137x.h
@@ -18,7 +18,7 @@
  * 4. Modifications may be freely made to this file if the above conditions
  *    are met.
  *
- *	$Id: es1370_reg.h,v 1.1 1998/12/31 08:14:27 luigi Exp $
+ * $FreeBSD$
  */
 
 #ifndef _ES1370_REG_H
diff --git a/sys/dev/sound/pci/t4dwave.c b/sys/dev/sound/pci/t4dwave.c
index 5404fe202a3..795f4d42c54 100644
--- a/sys/dev/sound/pci/t4dwave.c
+++ b/sys/dev/sound/pci/t4dwave.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include "pci.h"
diff --git a/sys/dev/sound/pci/t4dwave.h b/sys/dev/sound/pci/t4dwave.h
index 31f33406fb5..1e68c86e383 100644
--- a/sys/dev/sound/pci/t4dwave.h
+++ b/sys/dev/sound/pci/t4dwave.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #ifndef _T4DWAVE_REG_H
diff --git a/sys/dev/sound/pcm/ac97.c b/sys/dev/sound/pcm/ac97.c
index b3da9cb819e..18c38e7d885 100644
--- a/sys/dev/sound/pcm/ac97.c
+++ b/sys/dev/sound/pcm/ac97.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/sound/pcm/ac97.h b/sys/dev/sound/pcm/ac97.h
index c3460a20f27..b38d3443cd1 100644
--- a/sys/dev/sound/pcm/ac97.h
+++ b/sys/dev/sound/pcm/ac97.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 typedef u_int32_t (ac97_read)(void *devinfo, int regno);
diff --git a/sys/dev/sound/pcm/channel.c b/sys/dev/sound/pcm/channel.c
index dd383e5475a..4c91e44c33c 100644
--- a/sys/dev/sound/pcm/channel.c
+++ b/sys/dev/sound/pcm/channel.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/sound/pcm/channel.h b/sys/dev/sound/pcm/channel.h
index 8667a9f42ed..b8d92d0bf0f 100644
--- a/sys/dev/sound/pcm/channel.h
+++ b/sys/dev/sound/pcm/channel.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 int chn_write(pcm_channel *c, struct uio *buf);
diff --git a/sys/dev/sound/pcm/datatypes.h b/sys/dev/sound/pcm/datatypes.h
index 50928f608ad..c4259135f5b 100644
--- a/sys/dev/sound/pcm/datatypes.h
+++ b/sys/dev/sound/pcm/datatypes.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 typedef struct _snd_mixer snd_mixer;
diff --git a/sys/dev/sound/pcm/dsp.c b/sys/dev/sound/pcm/dsp.c
index a868e92f258..fcee2fc5e37 100644
--- a/sys/dev/sound/pcm/dsp.c
+++ b/sys/dev/sound/pcm/dsp.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <sys/param.h>
diff --git a/sys/dev/sound/pcm/dsp.h b/sys/dev/sound/pcm/dsp.h
index 27b7e3d37a5..c1ce0738c60 100644
--- a/sys/dev/sound/pcm/dsp.h
+++ b/sys/dev/sound/pcm/dsp.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 int dsp_open(snddev_info *d, int chan, int oflags, int devtype);
diff --git a/sys/dev/sound/pcm/fake.c b/sys/dev/sound/pcm/fake.c
index d050eef514c..b04eea7ce04 100644
--- a/sys/dev/sound/pcm/fake.c
+++ b/sys/dev/sound/pcm/fake.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include "pcm.h"
diff --git a/sys/dev/sound/pcm/feeder.c b/sys/dev/sound/pcm/feeder.c
index 3e51d749458..7c6ebebff7c 100644
--- a/sys/dev/sound/pcm/feeder.c
+++ b/sys/dev/sound/pcm/feeder.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/sound/pcm/mixer.c b/sys/dev/sound/pcm/mixer.c
index 0a7c918be76..9017e6ca9e3 100644
--- a/sys/dev/sound/pcm/mixer.c
+++ b/sys/dev/sound/pcm/mixer.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include <dev/pcm/sound.h>
diff --git a/sys/dev/sound/pcm/mixer.h b/sys/dev/sound/pcm/mixer.h
index 82a8f26c6f4..aac98a17a73 100644
--- a/sys/dev/sound/pcm/mixer.h
+++ b/sys/dev/sound/pcm/mixer.h
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 extern int mixer_init(snddev_info *d, snd_mixer *m, void *devinfo);
diff --git a/sys/dev/sound/pcm/sound.c b/sys/dev/sound/pcm/sound.c
index 102b87aa75d..570e51f3548 100644
--- a/sys/dev/sound/pcm/sound.c
+++ b/sys/dev/sound/pcm/sound.c
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #include "opt_devfs.h"
diff --git a/sys/dev/sound/pcm/sound.h b/sys/dev/sound/pcm/sound.h
index 5d17624640c..72b41a5e237 100644
--- a/sys/dev/sound/pcm/sound.h
+++ b/sys/dev/sound/pcm/sound.h
@@ -24,7 +24,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id$
+ * $FreeBSD$
  */
 
 #ifdef KERNEL