I am pretty sure the MX-5000 can send IP commands, but it might be limited to what devices. I pretty much just programmed it to control my TV, receiver, Blu ray, etc.. using RF/IR. I didn't see my TV listed in the IP pull down, so didn't look much further. I probably should see if my blu ray player is listed, since that might be a little more popular.
Question, why do you want/need the IP part? Wondering if I am missing the benefit, therefore the desire to dig deeper into it.