I can stream radio content to one renderer but not the other…

[simoncn]

I'm still not clear what you have working at the moment.

In a recent post you said you had the BBC HLS radio stations playing with *:wav (presumably with BubbleUPnP Server active). Is this correct or do you still need to use *:wav16;44?

If the stations aren't playing with *:wav and BubbleUPnP Server active, it seems likely that this is somehow related to BubbleUPnP Server.

After changing transcode settings, it is a good idea to restart the control point and the renderer in case one of these has cached the previous settings, which are encoded within the stream resource URL as you have noticed. If BubbleUPnP Server is active, you should also restart this.