[Stouty447]

Hi, I have recently started doing some multi tasking and would like to be able to switch audio sources on the fly, and listen to multiple stereo sources at once. I had a couple thoughts on how to do this, but none of them worked. So my question to you guys is, how can plug all of my RCA stereo sources into one hub and adjust the volume for each source. I have only found one product so far, and I'm not sure if it will do the job.
 
http://www.amazon.com/EZ-MX4L-Channel-Stereo-Level-Mixer/dp/tech-data/B002RMYHSA
 
Thanks
 
P.S. I'm not sure if this is the right sub-forum for this, but it seemed like what I'm looking for would fall under the category of "accessories".