[PeteBrighton]

Fair enough to wanting the 'why' and 'how' be self explanatory, but the site doesn't even convey 'what' it is. A line of text could do that in the least.

Having to listen to a audio message to get any idea of the content would perhaps be a bit like using twitter one tweet at a time, so you'd have to solve that somehow. If it's meant to be a sharing service, you'll have to show why it's better than using youtube. That won't be easy.

Maybe it would be better to use the tech you've built as an easy way of 'phoning in' content to youtube, facebook, twitter etc? not something I'd use myself, but I can imagine more use cases there, and it's instantly worthwhile to those users without needing a community of users first.

[postacall]

Yes, you actually got the idea as it started. When registered you can use your RSS feed to post to facebook, twitter etc. Or log in and post your chosen recording. I think a first change is to switch the landing site to a more explaining. And then click through to the call stream.