this could work:

Side Chain Compressor



http://www.ismusic.ne.jp/slim_slow_s.../index.html#c3

http://www.ismusic.ne.jp/slim_slow_s...SideChComp.zip

for stereo
input ch1: signal input L
input ch2: signal input R
input ch3: key input L
input ch4: key input R

for mono
input ch1: signal input
input ch2: key input

i've been told this one works+it's free...


ps: you could use rewire and hook up fruity or load fruity as a vsti itself!