Hmm. Well I don't see myself bothering to do this unless there's some more understanding of how the adjustments are to be used. I don't really like dynamic compression because passages in a song that were meant to be quiet end up being raised up. If this were some kind of factor which just specified a fixed adjustment per song ("this song is X decibels too quiet on average, this other song is X decibels too loud on average") then I might be more inclined to try it out. I don't really want my program raising and lowering the volume hundreds of times per song.