Yes, as of v2.2.0 this is configurable in /home/centovacast/system/config.php.  There are two ways to configure this:

1. If you want the self-referencing links to use the individual hostnames you've entered in the configuration for each stream, look for:
   
   define('SELFREF_HOSTNAME',false);
   
   ...and change false to true.
   
   Note that THIS WILL BREAK YOUR STREAMS if you failed to specify a hostname for any of your streams, and/or if that hostname is not configured in DNS to point to the correct IP address of the stream.  If you do not fully understand how DNS works, it is advisable to avoid modifying this setting.
   
   
2. If you want all streams to use the same, custom hostname, look for:
   
   define('SELFREF_OVERRIDE','');
   
   ...and specify your own custom hostname here.  For example, to have all self-referencing links point to foo.example.com, you might use:
   
   define('SELFREF_OVERRIDE','foo.example.com');
   
   Again, note that THIS WILL BREAK YOUR STREAMS if the hostname you specify here is not configured in DNS to point to the correct IP address for your streams.  If you do not fully understand how DNS works, it is advisable to avoid modifying this setting.
   

Please understand that these are advanced options and are only provided as a convenience for more advanced systems administrators.  If after enabling these options you find that you cannot tune into streams and/or access the ShoutCast/IceCast status pages, you will need to troubleshoot your DNS configuration.  Centova Technologies cannot provide technical support for this, and our helpdesk staff will ask you to disable these options prior to providing technical support for such issues.