VLC is free and 64-bit. Not the most convenient for playing music but it plays everything. I use MAX Tray Player which is really old but still works. It's this

VLC is free and 64-bit. Not the most convenient for playing music but it plays everything. I use MAX Tray Player which is really old but still works. It's this great little program that sits in your taskbar off to the side so it doesn't take up icon or window space. I use it for internet radio and I made a skin for it to match my dark theme. trayplayer.com As for mobile audio I use Spotify but I have a library of mp3s on my SD card that I play with the default Samsung Music app which works just fine. No ads in that so far. If you haven't tried a modern BT 5.0 device, try giving bluetooth another chance.