I have a very strange behavior where my synced music is not visible on an Android device, tested with several media players.
Here is my setup:
Syncing the music folder from my NAS (QNAP) to all my devices, on my Android to the SD-card (SD://Music). I can see in a file browser that all files are copied correctly. When I open a media player, it just cannot find the files. I've testet with MonkeyMedia, Hi-Fi Cast and Google Play Music. Now when I copy a music file, just copy-paste in the same folder, it becomes visible, which I don't get, because both files look the same, and I