Google is turning on a "scan and match" service for Google Music users to store copies of their songs online. The free service is similar to one Apple has and charges $25 a year.
The service cuts uploading time for those who want to save their music libraries online. It scans a user's computer and gives them online access to the songs it finds, as long as they match the songs on its servers. Otherwise, it will upload songs to a user's online locker.
The service is similar to Apple's iTunes Match, which includes online storage for 25,000 songs. Google allows storage for 20,000 songs and allows users to re-download the songs only at the same quality as they were at previously. Apple upgrades songs to iTunes quality.
Amazon runs a similar matching and uploading service called Cloud Player. It costs $25 a year for 250,000 songs. A free version is limited to 250 songs.
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