If you have a pc (not mac) try to sync the files using media player. This is a very clean way to get files on usb-you can set the quality level.
I have a ton of problems with mp4/m4p files not reading. I use real player and a few others to convert the m4p files to something readable. MP3 is not the greatest but try it and see if it plays at all. If it does, then start trying better formats.
I have a ton of problems with mp4/m4p files not reading. I use real player and a few others to convert the m4p files to something readable. MP3 is not the greatest but try it and see if it plays at all. If it does, then start trying better formats.