OK, before more people complain that I didn't keep the KDE in the loop about all that fancy event sound infrastructure work. The complaint is only partially valid: stuff like the sound specs have been seen before by the KDE guys. And for the rest it's just better to have something concrete to discuss about first instead of just starting an unfocussed discussion about all the grand plans we might have without ever having looked into actually implementing them.
Shortly after I posted that last blog story of mine I informed the KDE guys about this, and asked for their comments and suggestions. And this is my summary of those dicussions.