Well, here's some more that work with mplayer:
mplayer -playlist dsatg2.ram
gmplayer -playlist dsatg2.ram (with gui)
mplayer -playlist http://www.bbc.co.uk/6music/ram/dsatg2.ram

BTW, I've been at it with mplayer but just tested with xine and it plays both audio and video .ram files just fine. I just clicked on a couple with mozilla and told it to use xine.
Or was the point to use an embedded player?