Hi I am completely new with setting up music system. Is there any way to connect the same set of speakers to two different sources? I would like to have the speakers connected to my AV receiver for the home theater system, and also to a pre-amp for my stereo system. I am guessing it wouldn't be a good idea to have them hooked directly to the speaker at the same time. Is there any way to choose which source will used for the speaker? I guess the obvious way to do it would be to change the unplug and plug the wires at the back when switching between systems. But I would really appreciate any suggestions to automate the process.