Louder background noise

Is it possible to get the background noise louder and the foreground noise lower. I’m watching one of my favorite t.v shows and I want to listen to the two women fighting in the background, I want the foreground voices lower and the background noises louder.

Both the foreground and background noises are “broadband” (wide range of frequencies) and both have levels that vary in complex ways.
Both the “fighting” sound and the foreground voices are centre panned mono (appear equally in left and right channels) whereas the music is stereo (different in left and right channels).

It is possible to reduce the level of the music a bit, or reduce the level of the “voices + fighting”, using the “Vocal Reduction and Isolation” effect http://manual.audacityteam.org/man/vocal_reduction_and_isolation.html
It is not possible to separate the sound of the fighting from the sound of the voices, other than by manually selecting individual frequency components using a program such as Melodyne by Celemony (this is the only program that I know of that can handle a job like this, and it will take a great deal of time, and the software is expensive http://www.celemony.com/en/melodyne/what-is-melodyne)