Why does Apple Music change my own mp3 to m4p
I have uploaded mp3 files on my iMac. They are demo's from songs so not available in the iTunes Store.
When I access my music on my Mac Book the files have changed to the album versions available within the store.
Also when I want to download my own uploaded mp3, iTunes downloads a m4p file...
How come Apple Music changes my own uploaded (demo) mp3 to the album version? And also why do they turn it into a m4p file which can only be played through iTunes?
iMac (27-inch Late 2009), OS X Yosemite (10.10.4)