I have The mars Volta on m4a files on my mac at work. I burnt them all to disc and trid to import. It showed that they did import and they are located in my finder as in my iTunes library but they are no where to be found within itunes. I also have a folder with their discography in mp3 form, Imported that and the same thing happened. Okay just tried with a different mp3 folder and that too did not add to my library even though the folder is showing up under the itunes libary in finder. Anybody know what could cause this and more importantly how to fix it; i really want to listen to this.