Music clicks while playing and scene loading

I have ogg file which is playing in the background across scenes. The problem is that there are clicks and delays at some moments during playback and after Application.loadlevel() on PC(on some PCs it is allright) and iPad, but on Android it is allright. I tried all storage modes(decompress on load, compressed in memory, stream from disc). I tried convert it to wav and import but it did not help. I have this clicks in the preview pane also. But on some PCs it is allright. Maybe there are another settings, or audio parameters should be adjusted (16 bit, 44100 Hz)? Thanks for any advice!