Paranoid Android, Copyright? Creative Commons License? Options

[epidermus]

Hello, I am about to unleash a few of my songs online in order to get reviews, feedback, general exposure, etc. I'll probably use sites like Garageband.com and Purevolume. Myspace claims ownership of any track I post on its server, sooo I'm a tad wary about that.

I've seen info on both Creative Commons and plain old Copyright, and I'm not sure which one would be better. I'm healthily paranoid about work I've put so much time into.... so I'm leaning toward ALL RIGHTS RESERVED BLAAAAH but I might be wrong. Help?