Track info and MP3 links

I've got all my cds imported into the database, but there is no track information. I'm unable to download the cd info because there is no track info and I'm unable to fill the track info from the mp3s on the hard drive because the track info doesn't match (0 track info vs all the cd tracks).

Is there any way to:

a) Scan the drive and have the program find all related mp3s and link them in the media tab (instead of doing it manually one by one). Example: I have 3 .38 special cds that are listed in my collection. I'd like to have the program scan my mp3 folder, find those mp3 folders and then link each folder with it's corresponding cd.

b) Assuming that the above is possible, I would also need the tracks to be populated in the database from the mp3s listed in the hard drive album folder.

Have done some reading, but haven't seen this listed.

Any info is appreciated.