[PD] first trial,. but no sound

[Stefan Thomas]

Dear community,
I've installed pd, version 0.43.0-4 on my ubuntu 12.04 machine (64 bit)
from the repositorys.
Unfortunately, I can't get sound out of it.
First I'started qjackctl, and then PD. From the menue "Media" I choose
"Jack".
In qjackctl I can see, that system and puredata are connected.
When I know click "Media", "test audio and midi" unfortunately nothing
happens, it doesn't matter if the box DSP is choosen or not.
I can also open some patches, but I dont know how to get sound of it.
Am I missing something very simple?
Sorry, but I can't find my mistake.
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