Question / Help Need help adjusting audio levels independently

[oTcBakeR]

This is a technical question in regards to audio mixing with OBS, or maybe I need a hardware mixer.

So for starters I'm using Windows 7, I have a Steinberg UR28M desktop audio interface and a Rode NT1-A microphone which is connected via XLR then run as Line-in to OBS through USB, and I'm using Sennheiser headphones that are plugged into the UR28M,

What I'm wanting to do is turn down my game volume that's output to the stream, while still hearing the volume in-game as "full", while also keeping my mumble volume the same as-is. OBS comes with a volume slider for overall volume output but lowering that would lower both in-game and mumble. I can't turn mumble up on my end cause it would be way too loud for me in-ear.

Basically:
Microphone volume - GOOD on my end, GOOD on stream end.
Mumble volume - GOOD on my end, GOOD on stream end.
Game volume - GOOD on my end, BAD on stream end.

Is there any way I can independently mix mumble, or my game volume so that I can have more control over each application's volume output to the stream, while still maintaining what I'm hearing in my ears?

 

[Harold]

virtual audio cable and obs multiplatform should help

 

[oTcBakeR]

virtual audio cable and obs multiplatform should help

Can you expand on this a bit? This is actually my first time hearing about both virtual audio cable and OBS Multiplatform. Would I just be using VAC as an audio input capture for CSGO and lowering that as an output to the stream?

 

[Harold]

OBS Multiplatform lets you adjust sound capture levels on a per capture device level.
VAC lets you have additional soundcards without additional hardware.

http://vb-audio.pagesperso-orange.fr/Cable/index.htm
http://obsproject.com/forum/threads/in-or-exclude-sound-on-your-stream-recording.7560/