[ubuntu_studio] Any Audio Enhancer in Ubuntu.

Hi,

I have been looking for Audio Enhancer in Linux for a long time. I have just found one today.

http://soundpimp.com/guidelines/comp...nhancer-linux/

When I was using Windows, I found DFX Enhancer was pretty good. It would work with MP3 players as well as many other software such as Youtube and VLC.
However, it is not free, and I want to see if anyone ever use one, or found something that is similar in Ubuntu.

I hope you can suggest something.

Thank you.