How do I get the best sync

I wonder what is the best way to sync pictures and audio (voice / mouths). I used a preload to load the initial audio and then an event "all preloads complete" to begin playing audio and animation. However, sometimes the animation starts before the audio. There is a more efficient way to get this synchronization? Thanks.

Perhaps you could create it in a video editor then save it as a video file, that way it would be perfect every time and you woulnt have to worry about timing or big code

I'll use a few images to represent the phonemes and if the audio and animation start together, everything will work out.

My question is with respect to preload system. I want to know how to make it really effective.

Someone else?

I read that the audio in the Music folder has priority, that's right? Then it would be appropriate to put the first audio in this folder and still use preload?