[STLBlues]

Well at first I was thinking in terms of how much space (gb) it would take up on the DVD9, and not bitrates. But then the 'ole light bulb went off, and I figured it out. I've seen plently of factory DVD's where there was a PCM track, DTS, Dolby 5.1, & Dolby 2.0. So that's also why I thought there was a chance to fit all that info on there. I even converted the 2 less important audio streams to Dolby 2.0, and the bitrate was still too high. So I just opted to stay with the best sounding audio source. Maybe more than 1 PCM audio stream will be able to fit onto a Blu-Ray and/or HD-DVD. But I don't know yet what kind of bitrate those formats will/do support. Thanks for the responses everyone.