You have to refresh it each time in order to play it in VLC as they use one session key.
Code:
rtmpdump -r "rtmp://ecatelxeon.icasthd.tv/live" -a "live?f=CGolf&t=1362924461&s=4315510c03e81cb33c88c59dcad2e9a8" -f "WIN 11,6,602,171" -W "http://www.icasthd.tv/player/player.swf" -p "http://www.icasthd.tv/embed.php?v=cgolf&vw=575&vh=390&domain=www.myhdfooty.com" --live -y "CGolf"