[mythtv] ac3 audio problems 0.21-fixes (r16899)

[Khanh Tran]

Everything is working great with the upgrade to 0.21-fixes, except AC3
audio.  In an avi file or a DVD, the frontend log fills up with:

2008-04-02 18:00:02.431 NVP::AddAudioData():p1: Audio buffer overflow,
audio data lost!
2008-04-02 18:00:02.432 NVP::AddAudioData():p1: Audio buffer overflow,
audio data lost!
2008-04-02 18:00:02.433 NVP::AddAudioData():p1: Audio buffer overflow,
audio data lost!
2008-04-02 18:00:02.433 NVP::AddAudioData():p1: Audio buffer overflow,
audio data lost!
2008-04-02 18:00:02.434 NVP::AddAudioData():p1: Audio buffer overflow,
audio data lost!
2008-04-02 18:00:02.434 NVP::AddAudioData():p1: Audio buffer overflow,
audio data lost!
2008-04-02 18:00:02.435 NVP::AddAudioData():p1: Audio buffer overflow,
audio data lost!
2008-04-02 18:00:02.435 NVP::AddAudioData():p1: Audio buffer overflow,
audio data lost!
2008-04-02 18:00:02.467 NVP: Video is 3.19224 frames behind audio (too
slow), dropping frame to catch up.
2008-04-02 18:00:02.467 NVP: Video is 3.84473 frames behind audio (too
slow), dropping frame to catch up.
2008-04-02 18:00:02.468 NVP: Video is 4.08835 frames behind audio (too
slow), dropping frame to catch up.
2008-04-02 18:00:02.468 NVP: Video is 4.0193 frames behind audio (too
slow), dropping frame to catch up.
2008-04-02 18:00:02.468 NVP: Video is 3.71576 frames behind audio (too
slow), dropping frame to catch up.
2008-04-02 18:00:02.468 NVP: Video is 3.24235 frames behind audio (too
slow), dropping frame to catch up.

This only happens with files that have AC3 audio.  Everything else,
including live TV and pre-recorded shows works (MP2).  Anyone have any
ideas?  I'm seeing this on my various openSUSE frontends (10.0 through 10.3).
Thanks again for everyone's hard work.