Can I add music to my Toon Boom scene?

I know I can add sound effects, but is it possible that I can perhaps add a song from my iTunes library to play in it.
I plan on creating a scene that involves music and characters to play with. Last time I tried to add a song file from my iTunes library, it didn’t seem to be compatible.

when you import sounds, it says what files are compatible. if you’re song isn’t compatible just convert it

Exactly how could I convert the songs? If you could tell me from your experience.

google an online converter