[mythtv] Kernel audio buffer overrun

[Jim Perry]

This is a relatively minor issue, but I noticed that I was getting 
continual audio glitches (very short bursts of white noise) during any kind 
of high CPU activity, but with no errors mentioned.  Turns out that 
NuppelVideoRecorder uses SNDCTL_DSP_SETFRAGMENT to create 8 kernel buffers 
of size 1024 bytes, enough for 64ms of sound with the settings I was 
using.  Keeping the number low is nice and all, but I had to crank up the 
number of kernel buffers to get MythTV to run on my old, slow computer.

It'd be nice if this was configurable or an error was mentioned in the log 
(if that's even possible).

jim