Today is the one year anniversary of Apple's iTunes Music System (ITMS). To commemorate the day, Apple has released an updated version (v4.5) of the iTunes software for both Mac OS X and Windows.
New features include iMix and relaxations of DRM authorization policy. iMix lets you create playlists with track commentary that you can share with others, like the celebrity playlists that Apple produces. Also you can now authorize 5 computers to play your purchased tunes, instead of 3. The number of times that you can burn purchased music to CD has been reduced to 7 from 10.[Via Slashdot]