mlt clips have no sound component.
Scenario: Quite often I have to stabilize footage before I can use it. For this I use the vstab clip job, and use the resultant clip on the timeline. The same goes for footage that have been speeded up or slowed down.
All normal video clips have a video component, and an audio component, and these two components are split on the timeline.
Problem: When I drag a .mlt clip to the timeline, there is no audio component. For videos that have been stabilized I can use the original clip's audio, but for footage that have had their speed changed this is not an option.