Installed DOSBOX on my new linux machine. Some notes:

There's a config in the (hidden) .dosbox folder in the /home/you dir, aka ~/

Under the autoexec section at the bottom I added my old "hard drive folder":

MOUNT C ~/Desktop/DOSHDD
C:
DIR

Ctrl F10 or Alt Tab frees mouse cursor.
Ctrl F12 speeds up cycles. Can also set in config.

Couldn't get Music to work in Master of Orion 1. Messed around with install & the config for IRQ, sb cards. Turned out I just hadn't turned on music in the game ._.