Audio waveform display when in complex timeline
@dellasantina
Submitted by Luca Della Santina Assigned to Brandon Lewis @brandon_lewis
Description
When in complex timeline view audio sources that the user drags into the timeline display the audio waveform.
In this way users have a graphical representation of what's inide the currect audio portion of the timeline and can trim/join/apply filter with precision upon the audio track(s)
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=503842