I had this running in Dosbox over a year ago and it wasn't that hard at all if I remember correctly.

I believe I ended up installing the game from my CD onto my Windows Desktop (you won't want to install any music drivers since Dosbox on the Tablet can't handle the processing speed) and then transferred the whole folder right onto my memory card.

From there I used Rubybox and tweaked the settings for best performance.

I'm not seeing any reason to mount the entire CD like you're doing directly on the Tablet.

Post back if you have any luck or have more questions. I can always hunt down my CD somewhere and try it again with a better explanation next time.


Edit:
Does anyone need a simple explanation on how to get Xkbd installed?
I broke open a new tablet a few days ago and getting Xkbd installed was quite the pain (I thought it was packaged with Rubybox, oh well) but anyway, I have a pretty simple solution for it now.