2005 Prius with JBL - aftermarket options?

Hi all,

I've been looking for a solution to this for a while. Our 2005 Prius has JBL but no aux or Bluetooth. I can't use Crutchfield as they don't ship outside the US/Canada (I'm in Ireland). The cassette converter is terrible, FM transmitters are usually awful too. Are there any radios that are directly compatible with my car out of the box or with one of the Metra kits? I just got a kit off Metra but have just been informed that it's not compatible with JBL.

I'm going around in circles here!