Audio not detected (Salida ficticia / dummy output) on 20.04.1 LTS

great!

the unusual path to copy the file in the how-to says
1-3. Specify a new destination folder for saving.
It is recommended that you may create a new folder from
/usr/local/src/audio to save them. If you not find the
audio folder, you may need to create a new folder “audio”
by press “Create Folder” button.

the install script is here