I don't really understand the choice of Ras for the Black music slot. Benji B, or Patrick Forge would have made a lot more sense to me. Better still would have been a really good reggae slot with someone like David Rodigan
 
rtsp://rmv8.bbc.net.uk:554/1xtra/nujazz_fri.ra 
mms://emap1.planetwideradio.com/emaparchive/01-0100-0300-32.wma
mms://emap1.planetwideradio.com/emaparchive/01-2300-0100-32.wma