I tried to connect with the most simple way I found : telnet.
damien@es2irk11:~$ telnet public.bearshare.net 6346

Trying 208.239.76.97...
telnet: connect to address 208.239.76.97: No route to host
Trying 208.239.76.103...
telnet: connect to address 208.239.76.103: No route to host

damien@es2irk11:~$ telnet public.bearshare.net 63
Trying 208.239.76.97...
telnet: connect to address 208.239.76.97: Connection refused

Do someone has the same result ?