MuseScore blocks other audio sources under Ubuntu Linux
the problem has been persistent for several MuseScore and Ubuntu releases (currently 1.2 from the ppa and Ubuntu 12.04): When I start MuseScore and afterwards try to play music from some other source (e. g. YouTube or my music player), playback won't start. I can avoid this if I start playing music e. g. with my player and start MuseScore while the music is playing. This way, playback in MuseScore and also in other applications works fine.
It's just a bit annoying that I have to close and re-start MuseScore every time I forget to follow the described procedure... Did anybody else encounter this problem before? Maybe it's a problem of the interaction between MuseScore and the PulseAudio framework...