IPv6 support

[vinnielo]

The webstream at

code:
http://r4.zetcast.net/stream

happily plays in Chrome but in Winamp, all I get is [connecting to host].
On further investigation, it appears the above resolves to an IPv6 address, for those networks and devices that support it.

My understanding is that Winamp supports IPv6 but it doesn't seem to be able to conenct.
What's the official word on this?