Logic and iPod

I'm using Logic 7 express and the mp3's I bounce to itunes will not write to my ipod. Any ideas why?

I don't know what to say except that I am using Logic 7 express and bouncing the song to itunes (i tried as an mp3 and ACC) they play in itunes but will not write to the ipod, when I try and copy the file it says the ipod cannot play that type of file.

What other information do you need?

itunes won't give me the option to convert it to mp3 only acc. I did bounce it as an acc file.

I found how to get itunes to convert to MP3 it worked, thanks so much!