If you set the proper tooltypes in PlayCD, it will fetch the CDDB file for you.
I have a directory reserved for CDDB files and I use these PlayCD tooltypes:
DOSDEV=CD0
(DEVICE=scsi.device)
(UNIT=2)
(SKIP=???)
(PEEKTIME=333333)
(PUBSCREEN=<public screen name>)
(BUFMEMTYPE=1)
USECDDB
URL=http://freedb.org:80/~cddb/cddb.cgi
(PROXY=)
USER=xxxx@yyyy.comCACHEDIR=Caches:CDDB
LISTSIZE=10
USEAHI
"USER" has to be an email address. It doesn't have to be real, any address will do. I use an old address from the dial-up days, but it still works, even though the company folded 15 years ago.