Mix export added

Mix export has been added (export the stereo output to wav).

To access mix export choose 'Export Mix' below any fader in clip/item properties.

A mix export control will appear. Click start to start recording the stereo master output to disk, turn on and off any loops etc you want to export. then click stop to end recording the mix output.

Click on 'Show in exporer' to jump to the folder where the mixes are stored.