All my music is on an SD card and I play it through Samsung Music, which is fine. Had my S20 Ultra since 6 March, and only yesterday decided to add more music from my iMac. Straight forward, transfer the files via Smart Switch, however on the phone the files are in 'My Files' folder and do not appear in the Samsung Music app so no method of actually playing them/making playlists etc.
Anyone got suggestions of how to move them?
OK, I've found what the problem was. The music files in question were all m4p files, the old iTunes files that are protected. Apple changed the format in 2009 to m4a, which are unprotected. I've now subscribed to iTunes Match which will convert the old format to new, then I'll reload them into the phone.