I want some software to amend MP3 tags

[Dave Youell]

Ok, hopefully someone understands what i'm going to ask for here.

In short i need a programme that amends data on a mass amount of mp3 files.

Example:

I've got all the red hot chilli peppers singles on my PC and I want to upload them all with the same sort of info, ie:

Artist
Genre
Album

But they are all over the place with different spellings and such, so when i upload them to my player I can't just listen to one genre or artist because they are all slightly different.

I need a programme where I can highlight a group of tracks and amend all the data for them in one swoop rather than going through each one individually, is there anything that can do that?