Bookmark webcasts via Javascript?

I don't know if this is the right area to post this, but here goes:

I run a webcast and want to add html or Javasript to automatically bookmark (ie the ALT-I function) a webcast in Winamp. I have seen how to add a website bookmark for browsers via code, but is there any code available to add a webstream in winamp's bookmarks from a website?

I would use this feature as a convenience when a listener views my webpage. This would let him/her click a link, and bookmark the stream.

Thanks for any help...