My Dvd player is a coby536. it does not have an auxiliary mode or volume on the player itself. if i connect the ps3 to the sub woofer using a AV multi out wire on one end into the ps3 and the red and white ends into the sub woofer it works, but i cant control the volume of games when i play them that way. Ive tried the digital optical cable but i didn't get sound, (yes i went to settings for ps3 and selected digital optical for sound output.) how can i plug the ps3 into the sub woofer that has the other speakers attached to it and have a way to control the volume?