Good luck on the upgrade. I've been trying to get on someone's schedule but they all seem to me booked. Hopefully they will catch up and be able to take more work. Congrat's on your new acquires.
Sony mini-discs with their integral, floppy disc-like cases are NOT compatible with standard CD players.
I believe you are thinking of the mini-CD:
Yep, that's what I was thinking about. Lol
I don't have any anymore. They sound just like CD's if I remember correctly. Actually most CD players will play a mini disc. The tray accepts them right in the middle.
Listening to one of my personal compilations
Disc 1
1 Days That Passed By - Alexander Volosnikov
2 Berlin Coast - Chubbanak Club
3 Desert Storm - Elle
4 Season's End - DJ Q
5 Just A Cool Day (Cool Mix) - Human Dimension
6 Leftorium (Ambient Mix) - Dale Anderson & Anil Chawla
7 If There Was Love - Soarsweep
8 Natural High - Tosca
9 Fahrenheit 451 - ATB
10 Flotation - Scott Yahney
11 Deep Sea Green - Thierry David
12 Silhouettes At Dusk - Thierry David
13 Forever (Original Mix) - Tonkproject
Disc 2
1 Surface - Chris Zippel
2 Splashdown - Briza
3 Reflections on the Highway - Briza
4 Night Cruiser - David Arkenstone
5 Down By the River - David Arkenstone
6 Beyond the Deep Sea - Yoshida Brothers
7 Friends Are Beyond Price - Alexander Volosnikov
8 Kite - Alexander Volosnikov
9 Meerleucht - Alexander Volosnikov
10 Midnight Moon - Briza
11 Wishful Day - Briza
12 Falling Stars - David Arkenstone
13 Soft Sand - David Arkenstone