Hello Stuart,
I'm no expert on this one, but in my understanding:
Basically, you will use the FLIC to translate the codes sent by the Harmony into codes the Sunrise Box understands. To achieve this, you could use any profile from the harmony and still make it work. That is why we see multiple config files (multiple starting profile, different Harmony remotes).
I suggest you:
Choose an Harmony profile. Sagem or Sunrise. I let you chose.
Have your Harmony remote ready and loaded with the profile + your Flirc ready on your Mac
Send the "flirc_util record_api" commands one by one and for each, press the appropriate button on your remote.
When finished, you should get your flirc receiver ready.
As said by a few of us, some buttons like Netflix, or else are missing.
I personally suffer from double pushed buttons, but it seems better when my receiver is a bit hidden.
Hope this helps you.