Is there a way to force mupen64 to output in 4:3 with my monitor? I'm using a 20" 16:10 Dell dell 2007wfpb monitor with an HDMI to DVI cable. At launch, the games default to stretch, but I can go to monitor settings and select aspect mode and it goes to 4:3. I assume this is due to the way my monitor is handling the requested resolution. I hate the look of a stretched screen and it's mildly annoying to manual change the aspect mode every time. Is there an output mode I can use to fix it but not break things? I've done some fiddling but nothing seems to work.

Ok, thanks for answering. Knob adjustment it is.

I just setup recalbox and I am using a USB audio dongle. It is working as it should but I cannot adjust volume through the software. It says volume is 0, even though it is not. Is there something I can do to fix this or am I stuck with adjusting volume on the speakers themselves?