Apple has released iTunes 4.5 for Windows and Macintosh. The new version boasts the largest commercial catalog of downloadable files, along with many new features.

• Largest Legal Download Catalog. Select from over 700,000 tracks from five major labels and more than 450 independents with free 30-second previews.
• 150 Exclusive Tracks. Find the new pre-release Beastie Boys single, “Ch-Check It Out,” dozens of out of print Motown singles and Disney’s catalog of classic children’s music — only on iTunes.
• Share Your 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.
• Party Shuffle. Be your own DJ with a playlist that’s always full of songs. Add, delete and rearrange them on the fly to create the best mix for the moment.
• Print CD Inserts. Create stunning CD jewel case inserts for your album or mix disc using designer templates for both color and black & white printers.
• Discover Music. Find out what’s playing on more than 1,000 radio stations around the United States. Get music and audiobooks related to a movie. See a music video, get the track. Download a free song.
• Previews in Playlists and Quick Links. Save store previews to purchase later. Find more music from the artists you love via Quick Links in your library.
• Automatically convert WMA to AAC. Convert the music you saved in Windows Media Player (unprotected WMA files) to AAC format.
• Apple Lossless. 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.

More information is available at the Apple iTunes site.