iTunes being annoying

[Blue]

Ok, I have a .m4a music file I ripped from a .flv, and for some reason it won't add to itunes.
Quite annoying seeing as I want it on my ipod.
So... any ideas?

[scottish]

http://www.google.com/search?q=How+to+convert+m4a+iTunes+music+files+to+ mp3&start=0&start=0&ie=utf-8&oe=utf-8&client=mozilla&rls=org.mozilla:en-US:unofficial