There's a lot of talk on here about theft of music, and there are claims that you need to copyright your music to be protected, but this simply isn't true. In the US, almost everything originally created is protected, whether it has a notice or not. What needs to be common place is- If you didn't create it, then it is not yours, and you MUST assume it is copywriten. Also, if you have had your music stolen, and want to go to court over it, you have to prove that either A: You have suffered damages in that, you either lost money, or the defendant gained money over the work stolen. or B: It is a felony if 10 or more copies have been stolen, or $2500 in damages is present. I hope this helps some of you rest easier knowing that you don't need to file for a copywrite to be protected. Make sure your work is dated, and you are safe.