On 4/9/2019 6:41 PM, cyrille henry wrote: > My problem is very different than this issue. > It's about sending data, not receiving. Sorry I was a bit "general". I meant Portmidi (mac & windows) has some input/output issues but Alsamidi (linux only) is Ok. The output thing was discovered by you. :) Mensaje telepatico asistido por maquinas.