Google started the whole ‘music locker’ craze when it offered free storage for up to 20,000 tracks through its Play Music service (that limit has since been upped to 50,000).
If you have a Microsoft account, and you use it for both OneDrive and Xbox Music, a Music folder should show up on your OneDrive. This is where you can upload your existing music collection (up to 50,000 files). Accepted file formats are MP3, M4A (AAC), and WMA.
After you’ve completed the upload, the tracks will become available for playback in Xbox Music, regardless of whether you’re using the clients for PC, Windows Phone, Xbox, or the Web. The files you uploaded will be listed as songs in your collection, and you’re free to stream them as many times as you want.
Before you do any of this, make sure you’ve accepted the Xbox Terms of Use by signing in to xbox.com. Also know that the music locker is only available in Argentina, Australia, Austria, Belgium, Brazil, Canada, Denmark, Finland, France, Germany, Ireland, Italy, Mexico, the Netherlands, New Zealand, Norway, Portugal, Spain, Sweden, Switzerland, the UK, and the United States, at least for now.
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