On Fri, 11 Nov 94 14:09:20 EST   jfw@ksr.com (John F. Woods) wrote:
 > the speaker (I get a beep in the headphones when I echo ^G), but if I
 > cat a Sun audio file to /dev/audio, it hangs (just the cat, not the
 > whole machine).  I don't know if this is a driver bug, an emulation
 > bug, or perhaps just a broken audio file; any suggestions?

I'm seeing similar using a soundblaster and others have reported similar
using SB-PRO's... I've tracked it down to bsd_audio.c where it appears
that a timeout isn't being taken care of.  I'm setting up a temporary
machine at work to look further into it but I can't guarantee anything.

The symptoms I'm seeing is that when I cat a .au file > /dev/audio
it'll play for a bit and possibly even play a few files but then 
suddenly block... Sounds like the PAS aggravates it more....