[AAR.oner]

Any recording software / DAW will offer mixing and matering capabilities to some degree. I'm not in the industry anymore, but ProTools, Logic, Cubase, Ableton Live were all standard DAWs used a decade ago. Personally I preferred using Ableton Live + iZotope VSTs.

For basic mixing /mastering there are plenty of folks using freeware like Audacity for the task. When it comes to audience recordings, it's more about how you use the tools at hand as opposed to what software you're using. And a good set of cans, a critical ear, lots of practice, etc......ymmv but a general rule of thumb -- less is more