audio recording system

I have desktop version and would like to create a new web based version of this application. We would like to add features and functionality at the same time. We are open to platforms and backend engines such as Adobe's Flash media server. Audio must be recorded at high quality and buffered on the client end in case of internet connection loss. A binary of our existing application will be provided for review as well as a scope document of additional requests and changes to the original Show me similar audio system you did for web.