[Zope] any streaming audio formats that Zope can serve?

Playing with some Zope stuff that serves up a .wav file (dynamic sound content, mmm) it occurs to me that it would be nice to be able to have some sort of streamed content (so that the end system starts playing before it's fully downloaded the file) Are there any "streaming" type audio formats that don't require a special server? Then Zope could just deliver this to ZServer (or Apache) and let it stream the data to the end system. Obviously the format also should have a reasonably available client... Anthony