Re-route all audio from tablet to PC-Speakers My setup is the following: I have a PC and a tablet (Nexus 7), and only one sound system (2.1, 3.5mm input). My goal is to play both sounds coming from my PC and from my Nexus 7 whilst it is in the (official) docking station through the speaker-system hooked up to my PC.

I've looked for a way to merge the two incoming signals but without any success (except for cost-heavy DJ equipment to mix both signals), so now I'm wondering if it's possible to simply re-route all outgoind audio via USB to my PC (both running Windows and Linux (Ubuntu)). 

I'd appreciate any help you guys can give me. Thank you.
According to Lifehacker, you can use a headphone splitter in reverse to achieve your goal.