Listing to lectures on the go is a great study hack especially with how easy it is now because of smartphones! You can get your cardio in and get your learn on!
To build on top of that, I started using Microsoft "Office Lens" and "OneNote" to snap pics of the whiteboards from lectures as well. I think it is available for both andriod and apple. I find that listing to lectures and reviewing the whiteboards within 24 increases my retention.
Thanks for the hack... keep up the great vids!