HampsterStyle: I was also disappointed that the Timeshock! release was DOS only. I run Win7 x64 and the DOS version under DOSBox runs like ass. The ball and movement is choppy - as if there are timing issues with the physics. Since I had a backup of the windows version without the CD-DA, I made a complete version
(mixed mode CD) using the CD-DA from the GOG release. The only issue I have with the windows version is "freezing" in the advanced/custom audio configuration menu but using the preset audio config options under the main option menu works fine.
In situations like this where the original release was a mixed mode CD and the game's music is CD-DA, I wish they would also include the windows binaries with the disclaimer that running it would lack the CD-DA. This way those that are familiar with or have virtual drive software can just mount the GOG BIN/CUE on their own and run the windows version. (GOG renames the extensions of BIN/CUE to GOG/INST in their naming convention for mounting in DOSBox.)
Under each DOS Game there are rendering options. Some rendering methods for DOSBOX make each game smoother then the other and you have to play around with the options to see which one works best.