hello, you'll have to install a current version of adobe's flash plugin for some of this content to work: https://www.mozilla.org/plugincheck

Note that your System Details List shows that you currently have a very old Shockwave Flash 10.0 r45 version.

• http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html

You can find the latest Flash player versions for Firefox on this page.

• http://www.adobe.com/special/products/flashplayer/fp_distribution3.html

Thank you but following the previous advice I had just uploaded a new adobe flash, but unfortunately it made no difference. I still can't listen to radio 4 on firefox :-(

Did you check that the correct Flash plugin is used?

• http://www.adobe.com/software/flash/about/
• http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe Mode start window.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes