I have an odd shaped room in which I'm having troubling find a single location to put an IR receiver that can receive the signal cleaning for all locations.
Is it OK to put multiple IR receivers? If so, I assume I'll have the possibility of signals being duplicated since the second receiver may pick up stray signals? Are there any connecting blocks that are smart enough to filter out duplicate signals?
Multiple receivers would be more of an issue for the power supply - if it can supply enough power to run both... Speed of light means it won't cause "duplicate" signals. But all connecting blocks are just that - connectors. No processing of the signal(s).
You might be better off upgrading to an RF remote with a base station and emitters, then you won't have any coverage problems... If you can blast IR from the base station at one "good" location and hit everything, it would be even simpler.