Any good ways to cool an amplifier?

I recently burned up a nice Pyle Pro 3000 Watt amp at a frat party and when I tried to touch it the thing nearly lit my hands on fire. I am looking for a nice liquid cooling system for the (new) amp for as cheap as possible. It looks as if there is a circular plate I could attach it too underneath the amp that has a direct thermal connection to the PSU.

Thank you!

(any other suggestions on how to keep this thing cool are welcome too!)