The content model is currently ( (model.pLike)+ | (model.recordingPart)* )
which seems bizarre. It's possibly defensible to allow either model.pLike elements or model.recordingPart elements, but not both. But why not isn't it "oneOrMore" on both sides of the alternation?
A very common requirement is to be able to specify a location for the audio or video file concerned. Now that we have a
<media> element, should this not be made a member of model.recordingPart ?