In the thread you posted the link to, they ping the server until it pongs back.
Might make sense.
{
while true; do ping -c1 91.221.151.155 && break || sleep 1; done
xterm -e mplayer "http://91.221.151.155:80/;?.mp3"
} &
It does open after boot but there is no sound. AlsaMixer tells me there is sound.
speaker-test: not found... :s
Getting tired of all these weird problems all the time...
Reinstalling and try again.
Install alsa.tcz
$echo "amixer set "Master" 39 unmute" > ~/.X.d/alsaunmute
To test the audio
$ speaker-test -Ddefault:0 -c2 -t wav -l1
After clean install speaker-test still missing?