Hi
Some quick answers,
1: Don't know, I don't think so. See below for an alternative handy name.
2: Yes, if you leave off the parameters it assumes the default live stream number 1 and the default bitrate. 56 or 64 whatever you configured.
In fact, I append a handy reference name to the end of my string, which broadwave ignores, but allows me to see quickly which stream it is:
http etc broadwave.mp3?id=myname
Broadwave ignores the id, and myname is my handy tag to remind me which stream it is. Change that to whatever you want.
3: Sorry, can't answer that as my streams are not accessible from a website, but only for private streaming.