Hello, I am trying to create a very simple midi filter client for the alsa sequencer based on aseqview-0.1.4. I have alsa 0.9.8. This code shows the input and the output port in aconnect when executed. And, when the raw_midi client is connected The callback does get called when I play keys on my piano. However, Its as though the message is getting sent back to this client and not on to the next client. The process_event function keeps getting called over and over again with the same message when I hit one piano key. It's as though it is sending itself the message. Any Ideas are greatly appreciated. -Garett #include "portlib.h" int process_event(port_t *p, int type, snd_seq_event_t *ev, int *priate_data) { port_write_event(p, ev, 0); } int main() { unsigned int caps = SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE | SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ; port_client_t *client = port_client_new("MIDI filter", SND_SEQ_OPEN_DUPLEX); port_t *port = port_attach(client, "FILTER port", caps, SND_SEQ_PORT_TYPE_MIDI_GENERIC); int *priv_data; /* add callback */ port_add_callback(port, PORT_MIDI_EVENT_CB, (port_callback_t)process_event, priv_data); port_client_do_loop(client); return port_detach(port); }