Can't import certain m4a files into library.
I have a series of audio files (m4a) that I find myself unable to add to my iTunes library. They play just fine in the Finder, but when I drag them into iTunes, either one at a time or in a group, nothing happens. The library window highlights, but dropping the files into it doesn't import them. No error message, not a word of complaint, but no results.
Do I need to write off the files, or is there something else I should be trying here?