Rythmbox
 

How can I install other radio stations beside the ones that come installed by default in the"radio" section of my installed Rythmbox.
Is there a how-to around that can help me with that issue.
newbie....

Unless I'm missing something concerning your particular issue, click "Music" then click "new internet radio station".

Rinse & repeat.

Right click on 'Radio', then add the URL.