Regular music player with some new and legacy scenarios and other advantages has build on modern secure sandboxed APIs' set.
Just press a button at top-right corner menu and add some music. Double-click on a song to play.
Folder player section also can bring some new play scenarios to scan old disks to find out some forgiven music. Tested to work up to 200,000 testing files in one playlist.
Pro version is the same as free version. Just for donate purposes. Requires a lot of coding.