The only way I know of to get proper licensing for this would be to go to the content providers (Feedback, Luna Blue, Blue Pony, etc.) and buy the content yourself.....this will not get you the HES files/folders though.
The other (probably better) solution is to get an AXON with an H3PC widget.
Usually thumbnails are enough for brief demos if you don't have access to the gear.....but it begs the question: How serious are your clients of they cannot afford to set up a proper demo?