Rhodes Chroma Polaris

I did a quick disassemble on my "new" polaris last night and I took a
quick picture of the RH side of the motherboard in anticpation of
replacing the polypropylene capacitors.  That might be a vacation week
project if I can get the caps ordered in time.

I figured on taking lots of pictures to help me reassemble everything,
since I'm going to remove the motherboard, which looks to be a bit of
a pain.

In the meantime, I thought I'd take a picture of what I did see last
night.  The panel flips up and the keyboard is removed very easily. 

I noticed none of the presets are loaded.  I see there are sysex
banks, .lib  files, and on the Chroma site a .wav file which I assume
should be loaded to a cassette tape.

My dilemna a the moment is (a) I don't really do too much midi stuff,
so I'll have to get some cables (b) what program should I use to load
the files (c) which files should I use? (d) What would the cassette
tape load get me?  (e) and assuming it would be worth it, where would
I get the DIN plug to 1/8" (guess) jack to use the cassette port?

Thanks for any help.

--Tom