OK, if the remote will be in the same room as the equipment under control, this can be done chaeaply. You need a remote that can handle 6 devices, and is able to assign device types to device mode buttons. There are a number of remotes which can do that.

I'm familiar with OneForAll and other remotes made by UEI. Post a list of your equipment, and what part of the world you're in, and I'll make a suggestion.