1. Go to the "File" menu and select "project settings..."
2. In the window, look under the "dimensions" area for "ending frame"
3. Input the frame number of the last frame in your animation
4. Click "OK"
The settings should take effect and Moho should now play the entire sequence.
You can also hold Alt and right click on the timeline where you want it to end (or left click to decide where it should start). You will see that where the timeline is colored blue is what is included in the animation.
