I wouldn't recommend doing that. If your computer needs to swap whiles it's reading something from the other partition (Loading a game map, loading a movie, etc) it'll put the hard drive under tremendous strain, moving the head from the end of the drive to the start, swapping, loading, swapping, loading. It gives you horrible performance issues and decreases the life span of the HDD. Get another cheap HD for a C:, and you're set.
The idea of any hi-fi system is to reproduce the source material as faithfully as possible, and to deliberately add distortion to everything you hear (due to amplifier deficiencies) because it sounds 'nice' is simply not high fidelity. If that is what you want to hear then there is no problem with that, but by adding so much additional material (by way of harmonics and intermodulation) you have a tailored sound system, not a hi-fi. -
Rod Elliot, ESP