Acess,
If you’re wanting to do full compositions, stingers or loops Sony Acid is a great music creation tool. They also have a great library of royalty-free music at reasonable prices. The great thing about Acid is you can mix different audio formats on the same timeline and you don’t have to be a musician to do it. Acid comes in two flavors, Pro and Studio. The Pro version is just that and Studio is ‘novice friendly’ but still has enough features to take you where you want to go creatively. It’s also less expensive than Pro. The only drawback is it’s PC only software so if you are a mac weenie you’ll have to use your Bootcamped Win partition to use it.
