Sound lost upon DVD chapter change
Let a DVD play till the end of a chapter, through the start of the next one. Audio output gets muted somehow. This can be worked around by seeking back to the beginning of the chapter (Shift+P).
This is a 0.9->1.0 regression. Potential suspects may include the input rework, problems with dvdnav still calling RESET_PCR, and the audio output recycling...