Has anyone used this plugin with good results?

I ask because it seems to do absolutely nothing for me. I do have it enabled. I use Xmms in a Nightclub/Dance hall environment and keeping the volume at a reasonably equal level is a real problem, especially since we often need to have the flexibility to leave the computer to do other things. I set the volume, go to do something else, and a song comes on that blows everyone out of the room, forcing me to stop what I'm doing just to go in and lower the volume. Then, another song comes on and the volume is so low you can't here it! Needless to say this is very frustrating. I would appreciate any input, thoughts or recommendations. Thanks.