I agree that this is interesting, and at a minimum the visual design is right on track.

I think you might consider running (and or selling) this like an audio blog, where the content comes from guest bloggers. In that way, you can capture/curate the best content for the “forum.” You could gamify it to promote contributions.

Think: somewhere between a regular forum and YouTube, what value is there in an audio platform like this? And how do you maximize the value of the content while minimizing the effort required to make it great?

Brainstorm on the business model. There is something in this. Good luck.