Id3 Tag editor

I have a large collection of MP3s from my old pc system, that I want to bring to my new MBP. (they are all legal, for those that want to know)...

The ID3 tags are not consistent, missing some info, etc...

Anyone have a good program that will help me sort my libraries tags easily and smoothly, and most importantly .. efficiently..?

:headphone

You can change that info in iTunes rather easily.

yes, it is rather easy in Itunes, however, is it likely that I will find a program that does MASS editing. Where I can look a whole album at once, and cnange things there..

I have found some that claim to do this, but they simply dont work.
check out this one for a good example:

http://www.jthink.net/jaikoz/

You can do that in iTunes. Just select all of the tracks in an album and do a mass "get info" command. There you can set the album name, date, artist, etc. for all of the slected tracks.