Audiobooks

Hi all,

I am trying to build a webpage which would provide the ability for users to subscribe and in exchange receive store credits. The users should be able to purchase audiobooks for these credits and listen to the audiobook on the page. I am guessing this will involve a stack of multiple extensions and plugins, so I appreciate your help in suggesting them:
– Subscriptions with credits
– Purchase virtual content which cannot be downloaded
– Stream the digital content per user