Firstly I have mounted to c c:\dynamix\aodcd and m m:\ -t cdrom. I have also used the D.O.G. front end to tweak all the various options to try.
I have narrowed it down to a weirder problem:
On the second try I managed to get the game running by installing the game from within DOSBox, I thought I had solved the problem, without knowing how (this was using DOSBox 0.72). But on quitting the game and then restarting it, from D.O.G or manually within DOSBox, I get the same 'HMI Error: sw_sound etc' error as shown above. I then reinstall the game from CD within DOSBox and it works again!
So basically, to play the game at the moment, I have to re-install it every time!
This tells me that something is going on with the program or the conf file so that while that game is successfully being played, or when I quit from the game, something is written to the files/conf file to stop the game working again!
I have never come across anything like this before! When you consider I have 23 DOS games in my D.O.G. game list, and all the others work perfectly! I have had problems, but generally it's getting a game to run in XP. I can't remember the last time I had grief within DOSBox!
Thanks for all the help through. I appreciate it.