Check out the results from a SHOUTcast forum search
on 'unnamed server'.
Look for a post by bigash titled...
!!!!Changing station name!!!!!
If you have registered a domian name (such as foo.bar.com) and the DNS A records for that name point to your ip, then you can give out http://foo.bar.com:PORT
As a cheaper solution, you can get a static name at http://www.no-ip.com
(whether you have a dynamic ip or not).
DNAS link: http://yourDNASip:yourDNASport
Listen link: http://yourDNASip:yourDNASport/listen.pls
Just replace yourDNASip with the ip of the DNAS (SHOUTcast server) and yourDNASport with the DNAS port (default is 8000)
And/Or replace yourDNASip with your ip resolvable domain name.