replacing filenames with mp3 tag program recommendation

[Noah]

Hi there,

I have a series of files called 'Track xx.mp3' - where xx is 01, 02, 03 
and so on. I see that most of these files have the proper artist and 
song title in the mp3 tag information. Is there a program that can go 
through these files, capture at the mp3 tag information, and replace the 
file name with the artist and song title?  I'd prefer if the program is 
command line based.

Thanks for any recommendations in advance.

Cheers,

Noah