I have a Panasonic SA-PM31 stereo system with two auxiliary input methods: the first appears to be a common auxiliary cable input which says "phones." The second is a two cable input system labeled with the colors red and white, they look like the sort of inputs used in TVs and DVDs, however, these ditch the video input (yellow) and keep only the audio portion (red and white). I bought the typical one-cable auxiliary and plugged it into the portion that says phone. It appeared to fit quite nicely, there was a nice click sound as the cable fit into place and it wasn't too loose or too tight, just like a pair of earbuds fit an iPod. To my dislike, however, the music did not play when I hit play. I use my iPod in my car so I know the volume needs to be raised and I obviously know how to use an iPod, however, none of these methods worked. I discovered that, when I pulled the cable plug halfway out, the music played but the voices in the song didn't, and when I plugged it all the way back in, it stopped playing again. How do I get it to play correctly? Does this sound system even have a 3.5mm auxiliary plug or did I just mistake it for one?