I am wondering how I can keep the Prime format for the loop I downloaded (piano, arp, synth, etc.) while adding in the additions I made in Garage Band. I know how to upload a track to prime but how can I add tracks to the Prime songs I already have? Otherwise I have to load a Stereo Loop I downloaded, but it doesn't have the individual instruments once added to Prime. Right now I am running Garage Band with the stereo loops copied in. It is really easy, but I think Prime could be even better. Any thoughts? I am new to prime and LC although I have been making my own tracks for about a year.