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/open-discussion-topics/28751-membership-warning-beware-download-p2p-clients-only-thru-official-sites.html

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/open-discussion-topics/44499-get-your-back-music-members.html