Hi there. I'm brand new to all of this, and I want to use a mixer for Streaming, but I have a few questions. 1. Can a mixer be programmed to just change volume levels? For example, if I left a music program playing in the background, could I program the mixer to be able to adjust the volume of the music playing on my PC for use with intermissions and such. 2. If this is possible, what would be the best mixer to do this with? I'd prefer a smaller board. 3. If I have it programmed to adjust volume levels for my music and games, could I still use it at the same time to adjust levels on my mic? Sorry if these are stupid questions. As I said, I'm new, and I usually don't get so technical with things, but I've been wanting to get into it. Until now, I've been a basic plug-and-play person. Is there any tips you guys could also leave me for this?