I've put my cheap pc in my signature cause I realize that it may have something to do with some issues that I have; but I must say that generally speaking I do have glitchless playback here, though I must use mixed contiguous to use a higher SFS. Was listening to music yesterday from 3pm to 1 am and had gaps in playback once; when an HDCD was playing. I unticked "Decode HDCD" and all was fine thereafter.
I do notice though that since 9z-4-1, the ALT E command to pause a CD is now just like the ALT S command; XX completely quits. Conversely, and it seems they must be related, I cannot now slide the progress slider to a particular portion of a track and then hit ALT P. When I do, play always starts at the beginning of the track.
Before I was able to use ALT E to pause and resume play at that point. And I could put the slider to any portion of a track and play would begin there. It seems that stopping services resets everything to the beginning of a track.
These functions are nice when I'm trying to discern differences between Schemes and other XX settings, though I think I'm just going to be doing alot of listening and far less fiddling with settings for at least a month.