Samsung TVs have a "Source" button which is used to change the input.
First the choice list shows up, and then every time you press the button the source changes.
I have my input button mapped to the source button no problem.
The problem occurs in that after you scroll to your source, you have to make your selection by pressing enter.
Unfortunately I can't figure out how or where to map an enter button for the TV.
Are there any remote hacks that allow you to program additional buttons?