No need for that. Fruitly Loops demo is free for download at Tucows...see http://www.fruityloops.com/. Acid also has a demo which you can get at http://www.sonicfoundry.com/. And, just to help fuel the slander, Band in a Box has a demo at http://www.pgmusic.com/. All, I believe, use included sampled sounds to get you started so you won't need your synths at first, though I think Cloakboy is right about Fruity Loops being open MIDI as well.