Over the last couple of months I've acquired several digital audio and video devices and plan to get more. In an ideal world hooking them all up would be easy, but we don't live in an ideal world!
The main issue is that there simply aren't enough inputs and outputs available to allow you to daisy chain multiple HDMI capable devices together. You might be able to connect them together using other connection types, but that seems to defeat the object of having HDMI gear in the first place.
If you're confused by the terminology checkout the HDMI FAQ which explains in detail what it's capable of.
In any case the solution is to use a switch which is able to take in multiple HDMI sources and route them to the correct devices ie. amplifier, upscaler and TV
The device which seems to be the most adequate for the job is the HDMI switch from Octava
If you're based in Ireland there is a UK vendo
r who supplies them with the correct power supply etc., I ordered mine from them earlier today and it has already shipped!
Unfortunately the HDMI cables are not cheap, so you should shop around a bit. A few people have suggested Maplins, but I found some reasonably priced ones on Dabs as well.
Hopefully my new TV stand will arrive in the next couple of days, as the current one is way too small and trying to change any cables around is a truly painful experience.