I have got this partly working.
I have got the blaster working, but only with RAW codes.
The problem I have is that I dont know the RAW code for the OK/Select button.
This is important because the change channel script is a bit flakey, and sometimes doesnt always except a response from a number key press.
Therefore it would be useful to send an OK response to clear/reset the STB so it can accept a new input.
As for the radio time xmltv grabber I got this working a treat.
Its fairly easy once you know how to do it. You can modify the channels directly using the mythweb interface and enter the correct channels and xmlvid. You can then export the channels sql to use as an xml file for your source.
If you still want help give me a shout. Or if you found an answer I would be interested in knowing what config you used for the remote, so that I can sort my OK/Select button