If playback stops prematurely this may be due to the following reasons:
The show contains a redundant pause, stop or reset marker.
Solution: Disable all marker tracks and check whether playback continues at the corresponding position. Remove the redundant marker by right-clicking it and selecting Remove. See also Marker.
The location where playback stops contains an erroneously coded MP3 file.
Solution: Try exporting the MP3 files in wave format (*.wav) and use this file instead of the MP3 file. If export is impossible, this MP3 file cannot be used. See Exporting sound objects.