How can I edit music on iTunes without having to add them to the iTunes library?

I need to edit my music using iTunes without adding them to the library because of the long conversion process involved, is there any way of editing the music using iTunes?|||right click the song get info.info.|||First of all, your question asks how to do it without and then if there's a way to do it using iTunes. Secondly, we can't tell if you're referring to editing the audio or just editing the track information and such.