I tried too on 2.0 and RecordingControlsMorph new openInWorld (show will not work because it was relying on a soundNamed: 'croak' - do not ask me if this is a good idea or design to define class that cannot initialize themselves)
Now it looks like the buffers are not filled up. I should try in 1.4 but now I'm going to sleep. too tired. Stef
