Hi Tore,
Thanks very much for your tip, and for correcting me in regard to the mix-mode issue. Indeed, neither the original DOS edition nor the Commemorative edition of Tiberian Dawn uses CDDA, I do not know why I thought otherwise. Well, blunders make life more interesting anyways.
Alt+Enter brings the game in windowed mode to 320x200. Not very playable as such, but I am used to that sort of thing having experience with other games.
Curious as to why the other games than you mention have CDDA, but not use it in-game. That's kinda strange. Covert Ops has very nice 7 CDDA tracks, pity they are not heard.
Best ?