Sterling Times <2@slewis.biz> said:
Is software available for amateurs to transmit an on-demand stream or
listen-again stream of the type used by the BBC?

I note that I can fast forward or fast reverse on the Keith Skeus on
demand stream on Radio Norfolk on my Reciva radio. This is useful.

If it is really a on demand stream, then its not actually a stream its a download in which case once enough of it is in the players buffer you can do as you describe.
Yes there is software about, loads of it in fact, Shoutcast, Unreal and more.
It has to be on demand and not a live stream though.
Take a look at the WNKR site http://1476.co.nr for instance, at the weekend there is a "live" stream (it's not live its recorded but from the servers point of view it is live!) and then there is the listen again facility with a player embedded in the page, these shows are "on demand" and as such once enough of the file is in the buffer you will be able to fast forward or rewind, try it.

Dave