Firstly, is it a CD-R? The Oritron 100 does *not* work with CD-R media, full stop - if you can burn discs yourself, you may have more luck with CD-RWs. The player will work perfectly with real (pressed) VCDs, if you do the hack to enable VCD.
This site will probably answer most of your questions about the Oritron player:
http://allvols.virtualave.net/index.html
Mike