I've been searching the whole morning for some answer, read so many posts and forums and nothing helped.
I accidentally erased all of my music from my HD and I did it in Rythmbox. What I wanted to do is to remove music from Rythmbox, and not being aware of, "moved all my music to rubbish bin". No doublecheck, no "Are you sure?" questions (seriously Linux?). By the second I realised it, it was gone. Now all that is left in my Music folder are empty folders. The good thing is that all subfolders are still there as well (also empty), but hey, at least I know what I had.
Anyway, as I'm sure that the app. 100GB of music is still somewhere there, and couldn't manage myself how to recover it, can anyone help me on this? I'm currently using Ubuntu 12.04.