Duplicate Book Id Numbers

[mrmacjr]

I have the 40+ discs backed up on an external hard drive as the kma files that were imported by hoster. can I get them back into my show without reimporting each individual disc? I had to tell a few singers this weekend that I had a computer problem with the 40+ discs and that I did not have them with me. they were understanding this weekend but I will neede to have them back in the show by next thursday when I run the show there again. can I use the external to reimport the kma's and then rebuild the database?? Do I neede to delete a song.mdb?? If anyone knows please let me know.