While we're talking playback fixes, another thing that's been bugging me is
that persistent button use (such as holding 'down' to scroll a filename
list) causes gaps in playback on my H140. Without having studied the button
code, presumably the button thread isn't yielding enough CPU to the playback
engine.

I also note that buttons events are queued up in some places where it would
be better not to. For example, when traversing menus.

--
gl