Hi, i just purchased the APEX AD-500W dvd player from that walmart deal a couple weeks ago. It said that it did dolby 5.1 surround sound, and my stereo system (Panasonic) does that too, so i said hey, great bargain. when i got the dvd player opened up, i noticed that i needed a dolby decoder for the surround sound. Where could i find a really cheap one? I dont want to to be so cheap as to ruin my stereo, since that was around $350. its a 330 watt 5-speaker system which supports 6-channel discrete input for the 5.1 surround sound and a subwoofer. any thoughts?