This is driving me nuts. I'm building an HTML application for my iPad, but I can't make it play .wav files which are returned from either a Java servlet or an ASP handler (I'm sure I'm setting the "content-type" correctly - "audio/wav" or "audio/x-wav") In either HTML5 or Quicktime, if you set the data source for the object to a static file it works fine e.g. "/foo/bar/baz.wav", but if you set it to a dynamic source e.g. "/foo/bar/GetWav?audioFileId=123" the component just goes into an error state and doesn't play anything. Does anyone know if this is a formal restriction of Quicktime and the HTML5 <audio/> tag? Any workarounds?