I have the same problem, but the setup program always says "Error 253: Sound effects disabled" when I try to use any of the soundblaster options, "Unable to initialize Gravis sound" with Gravis, and "Error 192:..." with WSS. I'm using dos-box and I haven't messed around with the sound emulation.
um i also have a sound problem. is tehre any way i can activate teh sound(either dosbox or any tyrian.exe). I have an Audigy 2 sound blaster, amd2800+, windows xp w/ sp2. If i need to use dosbox to run it with sound, can u tell me how to do it, i dont understand the config box and the commands...thank you, also wen i try mounting doing the "mount c W:..." it says that path does not exist, ne reason?
CPU speed setting can be adjusted also [glow=red,2,300]during[/glow] the game, while you're in the Dosbox; you haved to use function keys for that (Ctrl + F9 and the like). Check the manual!
It's harder to answer about lack of sound on particular hardware and Windows combinations. I think it's a question to geeks ;D and to hardware/software vendors. In my case (Windows machine bought from store in 2005), all works well - music, sound effects, and the speed adjusting is quite acceptable as well. Switching between fullscreen and small window mode... What more can you ask for?
Also make sure that you mount the exact partition and folder where you've put the Tyrian executable files.