It seems the RIAA believes it's illegal to rip CDs onto your computer:

The industry’s lawyer in the case, Ira Schwartz, argues in a brief filed earlier this month that the MP3 files Howell made on his computer from legally bought CDs are “unauthorized copies” of copyrighted recordings.

Radley Balko points out that Hillary Clinton has said that she has Beatles songs on her iPod, songs that she couldn't have purchased through the iTunes store, and wonders if the RIAA will show the courage of its convictions and sue her.