>On Sparc, I get lots of pauses
>in the music (sounds like a buffering problem to me).  Is it possible to use
>double buffering for more reliable playback?  What else should I be asking?

On an i386 with an old version of netbsd, I get lots of pauses when
using a low water mark of 1.  audio_select uses a different test
than audio_pint, and with a low water mark of 1, the device is only
ready when the last block has finished playing and a silence block has
started:

===================================================================
RCS file: /sys/dev/audio.c,v
retrieving revision 1.2
diff -c -r1.2 /sys/dev/audio.c
*** /sys/dev/audio.c	1996/06/26 20:32:27	1.2
--- /sys/dev/audio.c	1996/10/24 14:57:17
***************
*** 1185,1191 ****
  		 * right? Or maybe specific to half-duplex devices?
  		 */
  		if (sc->sc_mode & AUMODE_RECORD ||
! 		    sc->pr.nblk < sc->sc_lowat) {
  			splx(s);
  			return (1);
  		}
--- 1185,1191 ----
  		 * right? Or maybe specific to half-duplex devices?
  		 */
  		if (sc->sc_mode & AUMODE_RECORD ||
! 		    sc->pr.nblk <= sc->sc_lowat) {
  			splx(s);
  			return (1);
  		}

Jason