I've installed vlc-plugin-jack and I'm trying to redirect the output of vlc to jack using this command: $ vlc -p jack --jack-auto-connect VLC media player 2.0.5 Twoflower (revision 2.0.5-0-g1661b7d) JACK audio input (access_jack) --jack-input-auto-connect, --no-jack-input-auto-connect Auto Connection (default disabled) JACK audio output (jack) --jack-auto-connect, --no-jack-auto-connect Automatically connect to writable clients (default enabled) --jack-connect-regex <string> Connect to clients matching Note: add --advanced to your command line to see advanced options. What's wrong? I'm trying to do this because I want to listen to a file (exported by Ardour) while Jack is running. Jack is using the same audio card (internal) as Pulseaudio, that's the source of the problem. Thanks in advance -- Federico