I don't know how to download music on my mp4 and I tried everything! So please, if you know have or have any idea on how to do that, please tell me. Pleeeeaaaaassseeee!

Normally it's simply a case of plugging it into a spare USB port and dragging and dropping from there.

But I tride this, and downloaded them but I saw my mp4 and the music weren't there!