For those who have been around a while, you know that Winamp is probably the best app (that supports multiple instances) for listening to streams on a PC (if you have to be on a PC) - after paying a lot of money for them and then mismanaging the business, AOL is shutting them down:
http://techcrunch.com/2013/11/20/after-15-years-of-whipping-the-llamas-ass-winamp-shuts-down/Sometimes good things come to an end. But your current version should just keep working. Download whatever skins and plugins you need/want, as well. I'm sure there will be other sites hosting the installers for a while, so no need to panic.