I have an MPEG2 file that is 720x480, and the sound is 48000khz at a bitrate of 380. Spruce will take this MPEG2 file but when I burn the disk I get video and no sound. If I demux this file Maestro will take the video and audio both but after I compile it it says that the sound file needs to be AC3 or PCM and this disk has no sound either. The disk plays with sound on my puter but not my set top. If I demux this file is there a way I can convert the wave file to PCM or is there another fix?