[LAU] looking for command-line/scriptable mastering software

Hi all, I have some live concert recordings (some destined for LMA[1]) which could use some processing in certain sections (usually to cut out crowd noise and AC hum). The recordings are hours long, but I only want to selectively process some portions (often sections inbetween music). So far, I've been writing scripts+makefiles to drive SoX. I use the SoX "trim" effect to split out sections, process the sections indivdually, and rejoin them (often with fade); but I'm wondering if there's something similar for command-line users which already exists. I've been considering writing a make-like tool, but would like know if something existing fills the role. I haven't been able to find information on using csound for mastering a few sections of audio, but maybe that could work... I don't like pointing devices, so it must be 100% keyboard-driven and easily repeatable/version-controlled. I manage my current scripts+makefiles via git. [1] - Live Music Archive (on archive.org) Thanks for reading!