Hi everyone. We have our first show on Saturday and I need to use my laptop as a backtrack. It's probably easier to burn a cd and make them play it through the PA, but what's the fun in that? I have a Firewire 410 M-Audio interface but I don't know how to make it output the sound so I can plug it into a PA. I've used it for a year but to record, not for shows. I wanted to simply use iTunes, but I don't know if that's possible. Any ideas? Also, I have a 1/8 to 1/4 converter which I can plugin to my headphone jack, and then to the PA. Is that safe though? I don't want to mess up anything. If it's safe, then I guess I don't have to worry about using an interface. Please help! Thanks. EDIT: I found out how to output the sound using Garageband, but I don't want to use Garageband. That probably wouldn't be simple to change tracks.