You have to substantially compress audio to make it stream effectively. In Netscape, the player opens in a new page and you have to press back to return to the original page. Here is a more elaborate sound thingy. You need the shockwave plug-in for it to work. This nasty little sound toy was created in Macromedia Director.
Director provides a full programming environment for creating sophisticated interactive multimedia.
You can actually have up to 8 channels of sound playing simulataneously in Director. There is an associated streaming audio format. It's called shockwave audio and it is technically very similar to mp3. Many music professionals use shockwave simply because of its sophisticated audio capabilities. A great advantage of html was that it was simple.