Do you feel remorse over all the MP3s you've downloaded? This site has the answer: send them back!
1. Look up the email address of your regional RIAA authority (listed in your white pages under "Recording Industry: Regional Authorities)
2. Open up your email program, such as Microsoft Outlook or Microsoft Outlook Express
3. Create an email to the email address you found.
4. Attach all the MP3s you're returning
(via JoHo the Blog)