sharing internet connection with mac mini?

Hi,

Any one know if it is possible to have the Audiotron (enet) share an
internet connection with a Mac mini?  I want to use OS X's "Internet
sharing " feature to have the Audiotron connect directly to the Mac
mini via ethernet cable and then have the mini connect to the rest of
the LAN and Internet via Airport.  I have everything running except for
the Audiotron connection.  Do I need a cross-over cable?  I tried it
with a regular ethernet cable but it kept crashing the mini (or rather
it kept crashing my remote desktop program as the mini is headless) and
the AT never got an Internet conenection although it was reading files
off of the mini via SMB.

Anyone every done something similar?

thanks

jerry