If the slides flash too fast and there are no sounds at all, it means your computer may not have enough processing power to keep up with the speed of slide transition. We suggest you try to adjust the delay of the slide transition or turn off the auto-forward setting.
For instructions on how to do this, please visit this article:
NOTE: This feature is only available with Little Math Pro.
If the solution above does not work, please try using the Audio Diagnostic Tool. For instructions on how to do this, please visit this article: