Stefan

Actually I'm just at the beginning of knowing UPnP and didn't yet investigate what the call back server has to do in detail :smile: But I see the problem of...

I just did the work and refactored the argsdef lists to dicts and implemented the class `Statevar` with methods `validate_arg` and `marshal_value`. It's completely untested yet as I currently have...

I will have a look at Readme and examples and run the tests. As mentioned, this was completely "blind coding" as I could not even run it in Python. I...

I agree on the problem. But i would prefer the solution the other way round: You can define one or multiple sources which do **not stop** the fading rather than...