That's probably a more appropriate question for the Software Forum, but it's ok 🙂
I don't know, I would look on Google.com - type in the name of the program and the word "review". As long as you have a good sound card, you're getting the most out of your MP3s quality-wise. You can of course turn on the WinAmp's equalizer to tweak the sounds, or use your sound card's Bass/Treble adjustments for more pleasant sound.
If you find out something interesting about that software in question, let us know.