Two Way Audio Blogging on the Move

I'm interested in making podcasts played offline on a mobile device that are interactive and two-way, allowing the user to listen to posts and record their responses, which can be periodically synched to a blogging technology on the web that supports audio in both the posts and in the comments. These audio posts might be linked to photos or text of course and optionally moderated.

Do let me know if you have similar interests or ideas on possible solutions!
Thanks!

whrrrrr...