(comcast rep here on forums for own enjoyment nor representing comcast)
Howdy, i suspect the blueray players might not work but if you reply with the manufactuer names and the color of the ok/select button I can look the codes up and let you try. (or since i assume you were using the manual earlyer you should have the correct codes there for the same manufacturer's dvd player)
It might work because they might not change the codes needed from what there DVD players use. If they have then it wont work but we wont know till then.
take care and i hope it helped
I have a new LN46A850 and BDP2500. I have Comcast cable with what I believe is a Motorola DCH3415 HD DVR , which doubles as the HD cable decoder. I have the Comcast remote operating the TV fine, but I cannot find a code that will make it operate the Blu Ray player. Does anyone know one? The alternative would be to make the TV remote control the cable box/DVR. Trouble is I cannot find a code for the TV remote that works the cable box. I have been through the codes listed and then stepped individually through each code that is noted to be a possibility. Anyone know a code I can use? For either remote?
Or do I have to buy a Logitech? Will that actually work? The Harmony One Remote looks like a good deal on Amazon.
Thanks!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic