Can anyone get sound outside the player with Beta10a?
I hadn't upgraded to beta10a until just now, but no, I can't get any sound either. How annoying.
It seems selecting the mixer source no longer automatically disables the Soft Audio Mute (SAM).
I wrote a quick hack to enable/disable SAM, and with this I can get sound to work again. You'll find it on the developer site:
http://www.empeg.mars.org/devel/hardware/mixer.php3#sam
Cheers, -rob