In perhaps the biggest threat to Apple's global dominance of digital music, Amazon just announced the international rollout of Amazon MP3. Right, the on-line storefront offering DRM-free music from all four major labels. That's 3.3 million songs (priced at $0.99 or less) from over 270k artists encoded in 256kbps MP3 files for playback on any PC, any Mac, and pretty much any portable device you might own. Sure, it's beta but so is that gMail account you've been using for the past 4 years. Unfortunately, the best that Amazon can commit to is "this year" which leaves plenty of time for the house of Apple to get their DRM shiznit together.