Thank you all,
Something shot my Midi-Mapping (perhabs Microsoft Update xD)
It works right now

Sorry Hü Pd.pd

@whale-av Pd.zip
I hope i got you right, english is not my foreign language

Hello @whale-av
Thanks for your quick respons!
I have no clue for your first question (it was 1 month ago).
But when I make a new file, it also didn't worked.
And I dont know, if I made an update (but I dont think so)

The information about "It worked" was only, because I didn't made a mistake in the project.
Greetings JayCe

Hey guys,
I worked with PD in December and the audio in my project worked.
This week, I wanted to show my project a friend of mine, but the sound didn't worked (same file one month later).
But the strange thing is, DSP is on and the Testtone came out.
Can anyone help me?
Greetings JayCe