This is a problem I had before with leopard, but very sporadically during the last year and a half... It has happenned 4 times since I downloaded Lion 10.7.3 yesterday. My computer plays a song, always the same (Helter Skelter from the Beatles FWIW) by itself. I have seen such things posted about ITune starting songs by itself, but... This is not Itunes! If I look into Itunes, it does not play the song. If I click on a song, it will play it over Helter Skelter, playing both smultaneously. If I quit Itune, the Beatles song keeps playing till the end. I have no other music playing software. I close everything but the finder, the song keeps playing. Then it stops at the end of the song (I've got blisters on my fingers!)until it starts again at some impredictable point. Any idea, or is my computer simply possessed?