A new Kickstarter campaign to remaster just Timeshock was successfully funded yesterday. As a result, the developers have re-released a Windows version of Timeshock that has all the music in it.... just like Big Race USA. This is not the GOG version that runs the DOS version of the game in DOSBox. I've tested it under Crossover 12.1.2 on OS X and it plays flawlessly! The only issue is that it will lock up if you try to customize the controls, as is an ongoing problem with this and the other PP tables. The tip to run the game in a virtual desktop to avoid this doesn't work. I'll try to experiment with this more for a workaround, but I'm not optimistic on that.
To get the Kickstarter release (not the remaster, which won't be due out for a bit), all you have to do is donate £1 before the time is up. Also of note.. the campaign has a stretch goal to remaster for Linux as well, and they are almost there. More details here:
http://www.kickstarter.com/projects/500643708/pro-pinball-timeshock-the-ultra-edition-0/posts