Fons Adriaensen: I would say that your function is a connect-many-ports-at-once function, not an autoconnect function. What I'm thinking is that the jackd program has an extra option called "--autoconnect-ports / -ap", which contains a comma-separated list of port names. If its not supplied, or "--no-autoconnect / -no" is not supplied either, jack_autoconnect(client,num_ports,port); will connect to the physical ports. This requires some modification to jack. But it shouln't be that much of a work. Besides, two other functions are needed as well: int jack_get_num_autoconnect_playback_ports(void); int jack_get_num_autoconnect_record_ports(void);