i have a nice visualisation that shows the musical information
bass being at the bottom of the screen ,it seems a linear scale as the bass isnt very detailed,the screen is mainly the midrange.

with winamp 2.9 etc... try this
control+P will give u preferences

go to
-plugins
-visualisations
set it to ' nullsoft tiny fullscreen'
down below in the textbox choose
"spectrum analyser and voiceprint"

press Configure-turn the BANDS up to maximum

Then with music playing click start

see what you think,i like it and would post a pic,if it would work!my digi cam recently died :(

Mike.e