Here’s the direct links to RTEs online radio channels:
RTE ONLINE FM RADIO
RTE ONLINE DIGITAL RADIO
RTÉ use Windows Media Player or Real Player to play streaming radio, and if you have any problems or need to know more there’s plenty of information at their help page.
They also have a Radio Gadget you can use if you’re running Windows Vista or Windows 7. You’ll need to make sure you have the Microsoft Silverlight browser plugin installed before you download and activate the RTE gadget – details here.
Happy listening, wherever you happen to be!