Apple Music includes the capabilities of iTunes Match, making tracks in the iTunes library on your Mac available to stream to all your devices no matter where those tracks came from. It does this by first matching tracks to those available in Apple’s library, and secondly uploading any it can’t match to your iCloud Music Library. All of those tracks are then available to play on all of your devices, but there’s still a 25,000-track limit on the latter type, just like in iTunes Match. Eddy Cue, Apple’s Senior Vice President of Internet Software and Services, recently tweeted that Apple is working to increase this number to 100,000 tracks by the launch of iOS 9 later this year. If you already subscribe to Match, there’s currently no rebate on the dupe functionality in your Apple Music sub.