Can I Copy My Subscription Music to Another Computer?
You may place downloaded subscription songs from Yahoo! Music Unlimited on up to three unique computers. This refers to songs from your Yahoo! Music Unlimited subscription which are downloaded (as opposed to either bookmarked/streaming subscription tracks or burnable, individually purchased downloaded tracks). However, you may access your Yahoo! Music Unlimited songs as streams/bookmarks from an unlimited number of computers. To set this option, go to Edit > Preferences > Y! Unlimited, and click Bookmark It under When I Add a Selection to My Music. Your subscription music will then be available as streams rather than downloaded files, but will not be available to play when offline.
You can access Yahoo! Music Unlimited subscription songs in streaming form from an unlimited number of computers.