1. First thing is getting the right broadcasting software, I recommend and basically force you to use nicecast from Rogue Amoeba.

Here is a little excerpt:

"Easy audio broadcasting is here. Nicecast is the easiest way to broadcast music from OS X. Broadcast to the world, or just across your house. Nicecast can help you create your own internet radio station or allow you to listen to your iTunes Music Library from anywhere in the world!" 

To download the program, you can go here:

 http://hotfile.com/dl/7507922/855c1d1/Niea196.dmg.html

Password for file is "stw" no quotation marks.

Install the program and run it.

To Install the program, open the downloaded file, insert the password stw and let it open. After that, drag the Nicecast Icon into your Application folder, and open the TOBW SN.rtfd file to get the serial number to activate the software. 

2. Now you have to connect your nicecast broadcast to the mobile-bb server, this is actually very simple.

First you need to download a few files: http://www.mobile-bb.org/naiocast.zip (save to desktop and unzip) and lucky for you, all the files are preconfigured to run on this server. The next steps may look a little hard but are actually VERY simple and will you make feel better about your tech skills. First off, open terminal.

Then paste these lines in one by one:

cd desktop/naiocast/naioSC

sh naioSC.sh

then you should see this come up:

MacMini-Famiglia-Vituzzi:~ OSX Admin$ cd desktop/naiocast/naioSCMacMini-Famiglia-Vituzzi:~/desktop/naiocast/naioSC Larry$ perl naioSC.pl      THEARTOFWEB Software 2001-2008      (                              )     (  (         NAIOCAST         )  )    (  (  (                      )  )  )   (  (  (                        )  )  )  (  (  (  naioSC - Sender Client  )  )  )   (  (  (                        )  )  )    (  (  (                      )  )  )     (  (       Version 1.8.4      )  )      (                              )-> Running on: UNIX (darwin)-> Checking Naiocast Server at www.mobile-bb.org on port 80 ...-> Response: Naiocast Server is Active-> Checking Audio Source at 127.0.0.1 on port 8000 ...-> Response: Icecast 2.3.1-> Preparing for Broadcasting ...-> Sending Naiocast Binary Header (1017 Bytes) ... Sent!-> Relaying from 127.0.0.1 to www.mobile-bb.org ...  

-> Broadcasting ... (you are on air!) 

And yay, now everything you broadcast on Nicecast, will be sent to the server and people can listen to it by downloading any of these files:

www.mobile-bb.org/NCServer/nph-play.cgi/listen.pls