To be recognized by the lip-sync animation as a usable track, you will need to add your audio to the voice-over timeline. You will notice that the ones in the music timeline are slightly green, while the ones in the voice-over timeline are blue. Related ArticlesToonly: Why is there an echo in my voiceover recording?Toonly: Is it possible to have the characters doing simultaneous actions with the lip-sync feature?Toonly: Trim AudioToonly: How To Use The Lip Sync Feature?Doodly: Voiceover And Sound