Sorry, my original post was probably not clear.

I want to capture myself playing the solo on video. I have no problems sending the BIAB backing files to GarageBand, or then soloing on top in GarageBand. How do I get GarageBand to send the sound output to iMovie or Photobooth? I can use either to film myself playing the solo.

Btw, this is not an exercise in vanity - I need to send these to a teacher smile