[John_Toolbox]

Basically, draw a measure of midi notes on a midi track, duplicate that region as many times as you need for the song, draw in tempo/meter events if there are any tempo or meter changes. Send the output of that midi track to an instrument of your choice, then open that instrument on an aux track(I usually used softsamplecell or samplecell with a hihat sample loaded for this, but if you don't have those you could use quicktime music as you mentioned).

A little more work than the newer versions, but it becomes easy once you've set it up once.