I finally got to test it on a PC and I can confirm that everything is working fine. The main digital display is a nice touch, and that's some cool programming behind the red button that can be used to scroll through the files, and also play them. As mentioned in a DM I think the source/media buttons both have a very similar meaning, and if you didn't read your instructions (like I didn't) then you can load the files with the wrong one which causes issues.