I found a post by "fischkopf" that worked well for me. He describes how to use the free pizmidi MidiPolyphony plugin by InsertPizHere with FL Studio Patcher and Color Mapper. It should probably work in other DAWs too, although I don't know exactly how to set it up. I also tried one key chords with VFX Key Mapper which worked but is more limited.zerocrossing wrote:There is a freeware polychain plug in... VST... I forget it's name. Google it.
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viewtopic.php?p=6241619#p6241619
MidiPolyphony and other midi plugins (free)
http://thepiz.org/plugins/?p=pizmidi
That thread also mentions notelogic, but I didn't try it.
http://xhip.net/effects/?p=notelogic