Mixing sound of two videos

The volume of two movies can be crossfaded between by sending each jit.qt.movie a vol $1 message with one being an inversion of the other. The left setup uses a toggle connected to a == 0 – so that the vol $1 on the left receives a 1 when the toggle sends out a 0 – and the right setup uses a slider – set to output floats between 0 and 1 – connected to a !- 1.