Listen With Your Web Browser
Listen With Your Computer
Download this file to listen. It should work in iTunes, WinAMP, VLC and many others. You may need to double click the .pls file that downloads on your computer.
There's also an option to listen with Real Player
Listen With Your Phone
You can also listen to Hollow Earth Radio from your smartphone using TuneIn, which is available for Android, Blackberry, iPhone, or Windows Phone