You can't do it with pure HTML as far as I can figure (same origin policy in browsers for many many years now puts paid to that)
but
using a server side scripting language (e.g. php) would make what you want a trivial exercise
look here -
http://forums.winamp.com/showthread.php?t=270301
or here -
http://www.szone.us/f6/standalone-ph...cast-status-5/
nothing particularly special about those two ... first two results on google for
php shoutcast monitor script