did you see this topic?
With the lite version, you can write into Scrivener and use command/alt, command/ctrl, command/shift to start stop, rewind etc… a sound or a movie (which can be full screen)
When Scrivener will get AppleScript, things will be of course better.
I made LoopyLoop to transcribe very difficult voices (accents, noisy environment etc) so I worked hard on looping area.
When I’ll have more time I shall focus on lite version as Scrivener and LpLx are the best possible tandem.