I have my macbook pro and an iphone. Planning to buy a dock for my phone. Ok this part is a little bit difficult: What i wanna do is Buy an iphone dock, which i can connect with my home speakers. AND i want to connect my computer to my home speakers. So is this possible to have two combined audio jacks connected to one pair of speakers playing together at the same time. OK, not actually at the same time, because i can control the computers itunes through my phone but anyways.. Because the last thing i wanna do is changing the jacks every single time i wanna swich the device i'm currently playing music on. any help?