It was announced this week that Xbox Music has integrated with OneDrive to allow access to your entire personal music collection from your Xbox Music application for free! Any music files that you upload to your new “Music” folder in OneDrive will start to show up in your collection on music.xbox.com and in the Xbox Music apps for Windows 8.1, Windows Phone 8.1, Xbox 360, and Xbox One and you don’t even need an Xbox Music Pass. If you do have a music pass, you’ll get an extra 100GB of storage on your OneDrive.
There is more information on the Integration here – I don’t have a music pass but will certainly be checking this out. We’d love to hear your thoughts on how it works if you do.