Hi all, I've been using these mixers and never really had much use for the sends other than adding a little reverb. Then the idea hit me as I was adjusting the bass for playing music. I use separate outputs for various applications to be able to channel them individually. Wave 0/1 (SPDIF/AC3) for the main out used by Windows, web browser, YouTube, etc. Wave 2/3 for Media Player Classic, 4/5 for Winamp, 6/7 for Audacity. To make things easier, I set up the sends, one to bass boost and one to treble boost. Using the maximum boost without distortion, I can then control the amount of both with the sends. I then route the output of the plug-ins back to an empty channel on the Mixer. Each app gets the correct amount by adjusting the corresponding sends. Works like a charm. P.S. If you only have one spare input, combine the plug-in outputs with stereo mix + gain.