Hello, I'm back with my soundsystem setup :) I've switched to the Audioslack after having heavily tested the DeMuDi 1.2.0 . Audioslack lacks a lot of software, but the main softs i need are there and uptodate. I had to compile TerminatorX, but it was not very difficult. so the subject of this message is to relate a strange behaviour of ecasound. finally, due the unstability of AMS I have used the Mario advice : split by frequencies range the ecasound input to 4 output. the input is TerminatorX. Everything goes well as long as, i think, an audio signal is received by ecasound. When the sample stop in TerminatorX, jack is struggling with xruns and if I don't play another sample in TerminatorX in a short time, ardour disconnect from Jack and everything crash ! This behaviour hapens both with DeMuDi and AudioSlack. The lonely trick I've found is to permanently connect my lonely capture channel output to the ecasound input :-( but I need this channel in order to connect my TB303 and I don't want it to be processed by ecasound. Is this something logical from ecasound or it should worth a bug report ? Regards Philippe