How does one post material on the Cuban "sneaker net?"

Warhol P has written a Havana Times post on the Cuban "sneaker net" -- the circulation of movies, TV shows, software, etc. on flash and hard disk drives.

He reports prices of 50 Cuban Pesos (around $2) for 80 to 500 gigabytes of material and 10 Cuban Pesos for 8 to 16 gigabytes. (These days one can get 64GB USB-2 flash drives for under $30 and 128 GB drives for under $50).

Warhol P says home delivery service is available and some consumers go to the home of the supplier to put together a package in accordance with their preferences. Other suppliers rent out hard drives for three to four days for a little over 4.00 Cuban Convertible Pesos (around $4).

But I have a question -- how does one gain access to the sneaker net? For example, I have developed some Spanish language tech teaching material for young people. It is under Creative Commons license and I'd be happy to see it distributed in Cuba. I'd also like to see the Khan Academy teaching material distributed in Cuba using KA Lite, a packaging of the Khan Academy content for use off line.

Are the sneaker net distributions put together in the US? Are they pretty much only entertainment and software or are they open to other types of material? Is there a way to submit material for inclusion?