Thanks Noel for OpenShot ! will check that out.

Also if you want to do it all in one with Ozone, Reaper will do it, demux video/audio, add FX to audio and render video to mp4.

https://www.dropbox.com/s/wlxoqp2zg48b8ot/Reaper-Multicam-Mix.mp4?dl=0

https://www.dropbox.com/s/vq7j6r7td780ngh/Good-Time-Reaper.mp4?dl=0

http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=397572#Post397572

Download Multicam Videos to practice with https://vimeo.com/110045836