Hi, there is a GUI tool named Aconnectgui. I use it for connecting MIDI ports to and between MIDI applications that connect to the ALSA sound system and MIDI ports. It seems there is a bug: Step 1: Run Aconnectgui. Step 2: Run fluidsynth -a alsa --midi-channels=48 This will start up fluidsynth and fluidsynth will create three virtual MIDI port (instances) that will show up in the Aconnectgui tool. Step 3: enter "quit" in fluidsynth. The MIDI IN ports of fluidsynth are closed and deleted in Aconnectgui. Step 4: Run fluidsynth again as in step 2. BUG: Aconnectgui will only display the first of the three MIDI IN ports of fluidsynth. You can now close Aconnectgui and rerun it. It will display three MIDI IN connections for fluidsynth again, which is correct. Is this truely a bug or am I missing out something? I think it is rather annoying when testing MIDI stuff a lot. Aconnectgui ought to update the connections in a more reliable way. Thanks for any help and regards, Crypto.