Need Song Info

[misfit20504]

I have like 500 songs I've ripped into MP3's. Not albums, but just CD's I've collected and burned over years of my custom playlists but only had them on CD's.
So I ripped them to my PC but they all just say "Track01, Track02, etc."
Is there an application I can use to automatically detect and assign song titles artist album title etc.. to them? (if the app is free waaaaaaaaayyyy better)

 

[BlueRevolution]

It could be there's a better way, but I've always just run a Google search for a few song lyrics in quoted form. Of course, that would get pretty tedious for 500 songs, but in a pinch...