Edit Mkv video/audio

I try to create that allow me to play music video or majority in MKV, with a little in AVI or Mpg. I Coulded distilling the audio stream on each MKV, and remixing with a annealed edition, but this would cost such time and time Is not on my side at the minute. I've tried everything - trying to use post-processing in audio frequency software like Winamp, even Media Player Classic. I'd like to recognize..

- is there a method to batch/bulk edit MKV's (and AVI/MPG and other video recording sources, with a possible change of script) to edit all these videos so the solution is viable to be run for future video installments on ape batch basis, not per video
- currently the platform I'm on is Mac OS X for playing and Windows for editing. I am prepared and will create the platform OS on whatever works best
- is there a player out there for Mac OS X or Windows that will do MKV/AVI/MPG etc and normalize post playing, without the need for altering the video audio itself?

As I said, the normalize feature in Media Player Classic has suprisingly worked well, but MPC as a solution isn't that great with playlists. I found a mac video converter is useful, but for windows user, need to use video converter for win or video to audio converter for win, is also good.

I am prepared to reward someone financially but I'm DESPERATE to arise with a solution as time is bolting. If there is one good deed you are able to do, I would be forever greateful for any assistance because I'm losing sleep and potentially losing business if I don't get this sorted.