iTunes 4.5

Apple Computer Inc. on Wednesday unveiled iTunes 4.5, a new version of the company's music jukebox software that contains many new features. Included in the new version is iMix, Music Videos, Video Trailers, a new lossless audio codec, free weekly downloads and Radio Charts. According to information posted on Apple's Music Store early Wednesday morning, iTunes users now have access to a free downloable single, which will be made available every Tuesday.

New Features

iMix Post and email songs in your playlists for everyone to see. Rate iMixes from other music lovers to drive them up or down the charts, and discover new music at the same time.
Music Video Section With a total of 72 videos, users can watch the video of a song and below the video purchase the song while they watch. Movie trailers have made their way from Apple's QuickTime to iTunes in the new release, as well.
Radio Charts will track the most played songs in more than 1200 stations across hundreds of cities nationwide, according to Apple.
Lossless Encoder Use the new lossless encoder to import music from CDs and achieve sound quality indistinguishable from the original, at about half the original file size. Plays in iTunes and on iPod.
Automatically convert WMA to AAC. Convert the music you saved in Windows Media Player (unprotected WMA files) to AAC format.