iTunes 10.5.1 for Windows and Mac has released today for public bringing iTunes Match. What is iTunes Match ? it's a new music service integrated with iTunes in the iCloud which let users able to "scan & match" their local music libraries and save their songs on iCloud. iTunes Match costs $24.99 / year and only available for U.S users so far and may be available in other countries soon. To use iTunes Match you must have iOS 5.0.1 and iTunes 10.5.1.
Unlike other cloud music services, iTunes Match uses a scan technology that enables Apple to match songs in a user’s library with the ones the company already has on the iTunes Store, whilst the ones that aren’t recognized in the scanning process are directly uploaded to Apple’s servers. Because the iTunes Store offers more than 20 million songs, Apple believes most user libraries will be matched in seconds with the catalog Apple already has, thus avoiding uploading an entire music library, which could take weeks on an average Internet connection. Furthermore, while the songs that aren’t matched with Apple’s iTunes Store are uploaded “as they are” (the exact file that a user has on a computer), matched songs are automatically upgraded to 256-Kbps AAC DRM-free quality, even if the original copy was of lower quality.Download iTunes 10.5.1 for Windows and Mac.