Hi this is great info. I am trying to do the same thing. We were recording with someone who LOST all of our mixes, including all of our detailed edits/ effect and now we only have the raw tracks. (I'm devastated to say the least!) I am now going to try to work on the tracks again myself using garage band. So the raw tracks are .wav format 24 bit 48Khz. Can I import these into garage band and actually edit them? thanks!!!