I am looking for a PC Audio mixing program that automatically mixes to sources at the same levels (floodgate). What I mean is that I want to mix subliminal messages in my music for me and I want to mix it to my favorite songs. So I need a program that no matter the levels on the songs and they go up or down it will keep the levels on the subliminal messages ate the right levels at all times. Thanks guys
Honestly? Max/MSP is a PERFECT program for this.
I don't know how you're making your subliminal messages (I assume you mean the binaural beat, brain wave trickery yes? - not saying it doesn't work, I've had bad success), but you can make your own brain wave sounds.
You could even create you're own music player to select songs (yours or otherwise) and have the amplitude of those songs tracked by Max/MSP; that data would then be control data to adjust the subliminal message you want.
Sound good? I might be able to make an application for you but I think you'd get LOTS of fun out of Max/MSP.