Audio not in line with Preview in Adobe Animate CC

Hello all,

I'm trying to create an animation in Adobe Animate CC but have run into trouble with some audio. The animation itself has an opening sequence with two sounds that sync fine on the preview (with command+enter swf preview) The intro music and sound effect to the opening sequence works perfectly fine, however it's the third sound (a character talking) which is bothering me.

When I press the play button on the program itself everything works well. However when I preview the movie command+enter (swf), the audio is out of whack with the characters mouth moving, even though I animated the sound to the character talking, it's the same result if I publish the movie. The audio itself is set to stream with repeat x 1. The third audio of the character dialogue starts a few frames back before the character actually starts talking. 

I've tried re-saving the same audio file again, deleted the old file and importing the sound file again, but it makes the same result, which I think is strange since it's doing the same to a different audio file. I would loved to get this fixed so I can move on with the animation as it's quite distracting, would love to have any help with this.

- Gemma