Linux Lite Forums

Not sure if this will help or not but it appears this may be a bug:

https://sourceforge.net/p/libmtp/bugs/968/

Here's another thread that might be helpful:

https://bbs.archlinux.org/viewtopic.php?id=177422

Thanks for your input Mike but the tech stuff in the links is way beyond me. Might as well be in Sanskrit.  ;D

Haha, sorry! You might want to try accessing the device from a media player. I read somewhere that the Clementine app can be used to transfer music to your Zen device just fine. You can find that right in Lite Software as "Music Player."

Have a read through this thread, see if it helps - https://forums.linuxmint.com/viewtopic.php?t=11970

Does your mp3 player have an SDCard? If yes, then try to plug in the SDCard directly.