Pioneer 6-CD changer (DRM-6324X)

I recently found one of these at a computer recycle store (very dangerous
place for my retirement account <grin>) and hooked it up to a Fedora Core 1
system.

The self-test indicates no problems, and as soon as the OS is up and
running the first tray will load automatically. If it's an audio disk then
a window displays and the first track plays - I don't have a sound card on
this system - that's another project... :(

What I'm trying to find out is how to control the dang thing! Anyone know
what the commands are for changing from one tray to another? Or, better
yet, an application that will give me all the options in one window?

I've already been to two web-sites (SmartStorage [Jukeman] and TenX
Technologies) which Pioneer listed for software, but neither seemed to have
anything related.

Also, looking for exact details on the series of dip-switches (seven of
them) - although most of them are explained on the back of the unit case.

Thanks a bunch,

DrJim
.