Originally Posted by DrNumbers

MP3's will not provide CD quality sound. Although, most people can't tell the difference between a 320 kbps mp3 and higher fidelity music, especially on a stock sound system.

That being said, here's a cheap mp3 player (that also plays FLACs) that I use at the gym:
https://www.amazon.com/AGPTEK-Playba...dp/B00XVVYGIC/

It's not the best player out there, but for $25, it works!