The DOSBox setings are pretty simple to understand. Probably setting the emulated sound card to an SB16 and making the settings match what the game expects (remember back then we often had to physically change jumper settings for programs that had different expectations, a lot safer to just edit an ini).
This is a good necro thread to bring back, especially with all the current talk about x86 software on the RPi.
To add my reply to the initial thread:
Everything from Watcom C, to DesqView X, GEM, Windows 98SE, GEOS x86, an older RedHat Linux, CP/M-86 with AT patches, and a lot of programs and games with each. This all with FastDOSBox in RISC OS. Thought I do not do much with it anymore, it is a good reminder of the problems of doing anything productive on the x86 series CPU's (strange segmentation [both real mode and PMODE], IDT/GDT, odd behaviours, TSS, etc).
RPi = The best ARM based RISC OS computer around
More than 95% of posts made from RISC OS on RPi 1B/1B+ computers. Most of the rest from RISC OS on RPi 2B/3B/3B+ computers