I was successful in importing one of coheed and cambria's song into the software so i could shift it down a half step and it worked. Now any other song i import doesn't seem to play the attached audio. Everything is setup correctly in the software and it is the same when i did the other song. The tracks seem to be flat when imported but the files themselves are playable in windows media player. Has anyone else had this problem, or can anyone recommend a free key shifter for mp3s?