My band is going to be releasing an album in about a month, and we want to distribute it for free. Now, I do still want to protect the music from being taken, reproduced, and sold under another name. Would a "poor man's copyright" be enough for this (IE, email & snail mail the music to myself)? You understand that I do not want to spend a terrific amount of money, since... well... it would be rather impossible to turn a profit! What would you recommend as a course of action?