playback problem

When the sound icon is selected the playback doesn’t work correctly; it plays only the sountrack but not the video (it shows only the image of the selected panel; the timeline bar is stopped on that frame while the soundrack continues correctly). if I click the sound button off, the animation plays correctly (but there’s not the sound).
How can i play my animation with sound to work optimally on timing (not after exportation but in playback)?

Thanks ahead.

Hi, Paikelts,
Please contact support@toonboom.com
Without seeing the real scene, it’s hard to tell what caused it.
Thanks
Wei