MP3MUSICHQ-COM is nothing to do with LW You should definitely talk to your bank/CC company, unless you want these scammers to keep deducting payments from your account!

Have a look through this thread, page 5 has a list of scam sites.
http://www.gnutellaforums.com/showthread.php?t=28751

I don't know if this other thread's going to be useful to you - there's info about how other users have been able to get refunds from scammers.
http://www.gnutellaforums.com/showthread.php?t=44499