So my audacity 1.3.13, running on ubuntu linux, won't playback any file or recorded sound. I've tried recording sound, and that works. But when I hit play, it 'freezes' after less than a second. When I say freeze I really am only talking about that bar cursor that tracks what position the song is at; it will immediatley stop after I hit play and won't move. The rest of the program, however, is not frozen. When I press stop, the "playback" stops and everything returns to normal. All other options and buttons seem to just go on standby when i press play, but like I said, the song simply won't play, whether it is recorded sound or an imported .wav. Any ideas?