Seems like some "SHOUTcast Distributed Network Audio Server" just disconnects you, when you don't provide an user-agent identification. How-To-Repeat: Try to listen, for example, to somafm's streams with mpg321 (and cross-check with mpg123). It shouldn't do harm to provide a user-agent, if it does one could make a knob for choosing the user-agent. I will inform the author about it.
Responsible Changed From-To: freebsd-ports-bugs->naddy Over to maintainer
State Changed From-To: open->closed Committed, thanks!