Hi Timur,
Have you opened the project editor (cmd + p) and looked at the audio routing and driver settings in the audio part?
To hear the metronome, you need to route his sound to an output in the output panel (also in the Project preferences).
I don’t know where yo can see « please drop it here » because that phrase is not in the database the soft… but I mp3 will not be imported by the audio import window, only wav and aif are currently accepted. sorry for the inconvenience.
Have looked the second auto : https://www.youtube.com/watch?v=8Lu-uBrb47k
The audio routing settings are explained. Maybe this can help you.
Logelloop 4 should work like a charm on any Sierra system with internal audio card.
please, keep me informed on how things are going.
Philippe