Have you thought about including some funds to purchase titles for the Listen Up! Vermont collection in grant requests you are making? Many of us, when writing grants for programs and services, include some money to purchase new books on the subject. Why not, as part of that materials budget in the grant, include $100 or $250 or $500 for purchasing digital materials?
We have had several libraries do this in the past year, acquiring children's materials and materials on personal finance for the collection. Such a request can be a small part of your overall grant budget, but allows you to perhaps increase the impact of your grant by highlighting the collaborative sharing of resources, providing materials in new formats, the "Green" element of providing digital media, and more.
Think about it, and contact the Selection Committee at vtaudiobooks[at]gmail.com if you have an idea for a grant or wish to write digital media into your grant.