bladeRF FM Receiver

[ratz]

Hi nuand team, hi forum members,

i am new to SDR and wanted to recreate a basic first SDR application using GNURadio - a FM Receiver. I was following tutorials on the internet, but i do not seem to get it working probably. I can not generate any audio output.
I attached my .grc file: bladeRF_rx_my_fm_receiver.grc

Here, you can find screenshots of the GUI and the GRC File in GNURadio-Companion:
GnuRadioGUIGRC-File.png
GnuRadioGUIsample.png

I would be really glad, if you could tell me if you see a mistake and how to fix it.

Greetings!

[ratz]

Do you need additional information that i can provide?
Hint: I updated my bladeRF v1 already to the latest Firmware available.