@Amigakit - thanks for clarifying the issue of the through connector. I was a little unsure as the advert for the through connector states that one is included with the Mediators, but it's not stated in the adverts for the Mediators!
@Ianoakley - thanks for the advice and info. I've got quite a bit of old PC 'tat' that may be suitable for use with a Mediator.
For the graphics side I've got an old Voodoo Banshee - possibly not the best of cards, but should still be workable. I've also got two Voodoo 2000 cards that can be paired up to double the processing power - is it possible to use these in the Mediator?
What kind of performance should I expect from a Voodoo Banshee (16Mb)? I realise that I won't be able to display games through the card, but will I be able to display hires workbench screens? If so, this would be great as I could hook up the Amiga to my TFT via the VGA connector to display the 30KHz+ stuff and connect the Amiga's composite out to my PC's PVR2000 tv card and display the 15KHz stuff via the DVI connector (using Winfast TV).
On the audio side I've got the choice of a Creative soundblaster, a Sonic Vortex 2 and an Opti - based card. Can any of these be used with the Mediator?