Weird sound issues after updating to F11

[Niels Weber]

After updating from F10 to F11, I have some weird issues with sound.
The funny thing is that generally the sound works, only some specific
programs have problems. Those problems can best be described as loud
noise that happens in the middle of the played music of some programs.

Affected are for example:
Supertux
Supertuxcart
Warzone2100
UT2004

Not affected are:
Rhythmbox
MPlayer
Vultures Claw
World of Goo
Prey

So it is not only Closed Source that is affected but also Open Source
games that came with F11.

Is there anything I can do? I'm not sure how to bugzilla those issues,
so I haven't yet.

As an aside, I have not managed to get sound in Wolfenstein:Enemy
Territory to work in F10 or F11. Any ideas?

Niels