I can report that I'm now able to use MC 13 with AudioProc, a sophisticated plug-in that provides the kind of controls used by radio stations, including multi-band compression, limiting, EQ, and more. It gives me "radio station" sound with lots of tweakability, a sound I like because I was a broadcaster for many years.
Some "buts.." and questions:
AudioProc was built for WinAmp, so it needs to be put in an undocumented WinAmp folder. It doesn't have a UI that integrates with MC, so with enough clicking I can get AudioProc's UI opened via MC's Plug-in Manager. So it's semi-MC-compatible, but works well once configured.
But, AudioProc is priced very different than MC, because it's sold PER COMPUTER, which gets very expensive fast. So it's probably for a very specialized market.
http://www.audioproc.ca/index.php?page=HomeQuestions:
When I put AudioProc in MC's DSP chain, AudioProc's natural output audio level is very hot compared with MC. I have to turn down AudioProc's output by about 18db to get them roughly the same. Is this just a side-effect of it being a WinAmp plugin, or is something else going on? (It's actually quite interesting to have a way to crank up the output, because MC natively always seems "low".)
Where in the audio chain is MC's Spectrum display? It seems to be BEFORE audio is fed into DSP processes. I'd love to see on the Spectrum display what I'm actually hearing. It would be wonderful to treat the Spectrum (and maybe other audio-stream displays) as DSP chain elements, and to allow positioning of each DSP element.