Jeff,
Try this....
When you click on the "scan media" tab in the tool tray, and the "add media files" window pops up, uncheck both "get info from tags" boxes, on the top of the list. Do check, "get info from file and directory names".

Then when you locate the file to be added....
Both cd's must have the same name exactly, (artist name and album title) you then need to set the first cd to 1/2 and the second to 2/2.

worked for me

But...I am having problems w/ multi titled cd box sets like 14 different various artist cd's. Tony, if you get it solved, post it here would ya?