a) It sux fat wang, b) I sure hope not.

It's bad enough to see people using this shit to create an "awesome surround 5.1 expererience" from a mono or stereo source on a video DVD, and audio only would just be worse. There aren't many shows that exist that can be legitimately converted into multi-channel format, and in those cases, it would be possible to use PCM for all the channels. I think the proliferation of these DTS projects capitalizes on the lack of format knowledge in the general public (see above) and the misguided belief that more tinkering makes a better show.