Sorry, I could be missing something here, but this solution doesn't work, for a simple reason: it means you can't have 'Watch my videos' or 'Listen to music' in your activities (and thus the single-hit macro buttons at the top of the 650). That's because the truly dreadful Harmony software won't set up an activity unless you've defined a suitable device. So when I try to define 'Watch my videos', it doesn't want to use a television remote control as the device; instead it prompts you to select or define an device that can play DVDs.
Has no one else experienced this? Or am I the only person who uses the macros?
Regards to all, and thanks to Jason for a terrific product!