Need a guru on burning Jimmy Buffett *nba files

[2BUGS]

Have an original Jimmy Buffett album 'Don't Stop the Carnival' which I want to copy and archive the original. However the album contains only nba, exe and dll files there are no song tracks in any music format. I cannot drag the nba files to the create and burn window as the nba files are not accepted. . Tried to make an ISO image file and had the same problem. I can copydisk from a CD reader to a CD writer and it works fine. What are *.nba files and why do they not show wave or associated music files?
Thanks for your help.

 

[LTR12101B]

http://www.amazon.com/exec/obidos/tg/detail/-/B000006DI6/002-2844791-1020052?v=glance#product-details

At first, I thought "PROTECTED", but it would appear that it's an Enhanced CD - an Audio session that audio players will play, followed by the Data session that the computer reads (though unlike protected CD's, you should be able to play the audio using a PC CD player program)