What's the right way to connect a Sony Bluray Home theater in a box to my cable box and HD TV?

I have a Sony Blu-Ray that's part of the Theater in a Box, I have a HD DVR cable box from time warner (motorola), and a LG 42" HD TV. The bluray only has one HDMI input, the TV has 2, the cable box has 1. They all have an optical cord input, as well as a coaxial (orange) cable. It seemed straightforward enough, HDMI cable from the bluray receiver to the TV, and also another HDMI cable from the cable box to the TV. I thought I didn't need cables for the audio as I thought the HDMI cable did both video and cable, but I had no sound, so I added the optical cable from the bluray to TV and I had sound, but then reading the manual, thought I should have added it from the cable box to the bluray, I think now I have the optical cable from the bluray to the cable box. I can play discs and operate the bluray machine but the problem I'm having is that after I use the blueray, I can't switch input (in my TV remote) back to HDMI1 to view my TV again. And I can't view the TV picture on the Bluray TV input, I only can get the TV sound. Not sure if I'm supposed to be able to view the TV through the bluray or not. I am not sure if this is a glitch with my connections or if it's a problem with my LG TV. It says "connecting..." but never connects, and then if I try to power it off, it won't register for a while. It takes a few minutes to get it to turn off, and then when I turn it back on, it'll work fine for TV viewing. It's a pain to watch a movie and then when it's over not be able to easily watch the news. Do I have the connections right? (sorry for the lengthy question)