No, there's a bug in 2.0beta11. You can still unmark from the player itself.

Ah, ok. Hmmm come to think of it, this is the first time one of the bugs is eh...bugging me (oh yeah, and there's that thing where the player takes a few seconds to start playing a track once I've skipped a few - somewhat annoying, but I'm practically used to it by now)

Other than that I'm very happy with b11 so far. Nice work!