In a recent tirade, Metallica drummer Lars Ulrich threatened to confiscate individual users' hard drives if they illegally downloaded his music.

BBC: MP3: A novice's guide

Join us this week as WorldBeat checks in with Lars Ulrich of Metallica, Chuck D. and Chapman, plus Slipknot, Rage Against the Machine and Stone Temple Pilots to get their take on new digital music technologies.

CNN: Artists differ on Internet music distribution