harryhaaren(a)gmail.com wrote: Raw MIDI ports do not allow sharing, so you have to tell all programs you want to use at the same time to use the ALSA sequencer. Instead of amidi, use aseqdump. Regards, Clemens

Hi Thijs, After reading your blog post, I wanted to let you know that you can probably do this whole thing in a simpler way using mididings: http://das.nasophon.de/mididings/ If Hydrogen can only send note messages, this is not a problem, just route the note through mididings and convert it to something else there. It looks to me like your effects unit expects program change message, so assuming when you switch to your song, you want to select Program 1, you can send (for example) note 56 out of Hydrogen to mididings and convert that note message to a program change. You can probably get away with something as simple as : from mididings import * run( KeyFilter(notes=[56]) >> Program(1) ) This is just a python script, so put it in fxselector.py and then python2 fxselectro.py This will set up the necessary midi ports, you'll be able to see them in the jack graph. For more than one program, just decide on all your notes and then place the individual units in a list, which will essentially allow parallel execution in mididings: run( [ KeyFilter(notes=[56]) >> Program(1), KeyFilter(notes=[57]) >> Program(10) ] ) It's a very powerful tool. You can assemble any message you want if a simple program change won't do. On 12/16/11, thijs van severen <thijsvanseveren(a)gmail.com> wrote: http://audio-and-linux.blogspot.com/2011/12/pro-dsp1000p-automation-with-hy…