Make bubba use an external proxy, but only for certain urls

[A_Swissionary]

Hi,
I'm running my B2 in Server + Router Mode, so B2 is the gateway to the internet for all other devices in my home network.
I would like for Bubba to send some of the internet traffic through an external proxy server. The decision about using or not using the external proxy should be based on the requested URL (or at least on the requested domain).
And, if possible, the system should be integrated in a way that only bubba does the re-routing, while the other devices in my network don't need to be re-configured.

The last thing I just tried was setting up a wpad,dat file. But unfortunately, I discovered that only some of my network devices take this into account; others (like my Iphone or my Squeezeboxes) don't even access it.

So, does anyone have a hint on how i could set something like this up?

Thanks for any advice; best,
René

[Eek]

Use Squid as a transparent proxy