songs don't play on my MP3

[Android Central Question]

I have a hard drive with thousands of songs- I'm transferring the ones I want onto my MP3 player- and the songs all show up under "my computer" MP3 file- but they DO NOT PLAY when MP3 player plugged in....VERY FRUSTRATING

 

[B. Diddy]

Welcome to Android Central! Is this an Android MP3 player? If not, then you probably won't find much help here.