How do I use my GarageBand and iMovie sound effects and samples in the game?

When in post production, you can edit the soundtrack for the movie. On the Mac, the list of background music is greatly increased with built in GarageBand and iMovie support. To do so follow the steps below:

The Movies: Superstar Edition supports the default effects built into GarageBand and iMovie, it also supports all of the extra sample sound files you can purchase in "GarageBand Jam Packs"; all you have to do is install the pack(s) and The Movies: Superstar Edition does the rest.

REMEMBER: You cannot upload any movies with copyrighted music to YouTube. Please take this into consideration when making a movie you might wish to upload to YouTube.