Cantus
Cantus is an easy to use tool for tagging and renaming MP3 and OGG/Vorbis files. It has many features including mass tagging and renaming of MP3s,
the ability to generate a tag out of the filename, filter definitions for renaming, recursive actions, CDDB (Freedb) lookup (no CD needed), copy between ID3V1 and ID3V2 tags, and a lot more.
OK so iut makes a tag from the filename but still I only have to write the name once this way.
thanks digiot- easyTAG is prety nice too.