I had to use 3rd party software to add a backing track because the last ~10 seconds would always cut out. This and other rendering problems have really disappointed me. Out of 5 days making a scribe, 2 were spent just rendering (and by rendering I mean troubleshooting). This is unacceptable--Camtasia saved my project. I look forward to future versions of VideoScribe and intent to keep using the program. Until then, my subscription will be cancelled.