This has nothing to do with how the CD-ROM is accessed. The only requisites are:
- all files from the CD must be present (e.g. the multimedia files)
- the volume where the files reside must be named "AmigaOS3.9".
You can add the CD as a harddrive, or copy all files to your harddisk or use uaescsi.device. It really does not matter.
Bye,
Thomas