Streaming from an http server rather than a share actually sounds better!
With the use of open source software like ffmpeg you would be able to convert most popular media formats and you could use thttpd as the server to stream the media, and yes thttpd does support "Byte-Range" headers.
Does anyone know if the box can support UPnP, I assume not.
Matt,Does anyone know if the box can support UPnP, I assume not.
your assumption is right. There's no UPnP(-AV) support in the firmware, and IMO it's unlikely that it will be added because the DVP's memory is very limited.
Why run a server for the client when you could just mount the share?