I bought some Y splitter cables for the inputs of audio for my TV so I could have the DVD player and the Wii plugged in at the same time. For some reason the DVD player works fine but when both are plugged in and even when the DVD is off, there is no sound for the Wii. It only works if I unplug the DVD player from the splitter. Any ideas? PS My new LCD TV only has Audio inputs of RCA cables and a 3.5 mini jack inputs.