So colin, tried but..... The problem is stil here because Vbox redirect all VM on default sink and source , and I don't understand how to redirect correctly each input on each output. I tried "pactl move-source-output" and pactl "move-sink-input" but doesn't works (the sound doesn't correspond from one VM to another) ..... There is a thing I don't understand is how to redirect VM 1 sound output to VM 1 sound input using 2 sinks ? So, shall I give up ? <div class="gmail_quote">2010/10/19 Colin Guthrie <<a href="mailto:gmane@colin.guthr.ie">gmane@colin.guthr.ie</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Try editing the appropriate file and make the following changes: 1. Comment out the line that says: load-module module-always-sink 2. Add the following lines: load-module module-null-sink sink_name=fakeout load-module module-null-sink sink_name=fakein set-default-sink fakeout set-default-source fakein.monitor Then restart PA. If it doesn't restart then there is something wrong with your changes (so best to keep a backup of the file). Hopefully that'll be enough to get things setup for you. <div><div></div><div class="h5"> Col -- Colin Guthrie gmane(at)<a href="http://colin.guthr.ie" target="_blank">colin.guthr.ie</a> <a href="http://colin.guthr.ie/" target="_blank">http://colin.guthr.ie/</a> Day Job: Tribalogic Limited [<a href="http://www.tribalogic.net/" target="_blank">http://www.tribalogic.net/</a>] Open Source: Mageia Contributor [<a href="http://www.mageia.org/" target="_blank">http://www.mageia.org/</a>] PulseAudio Hacker [<a href="http://www.pulseaudio.org/" target="_blank">http://www.pulseaudio.org/</a>] Trac Hacker [<a href="http://trac.edgewall.org/" target="_blank">http://trac.edgewall.org/</a>] _______________________________________________ pulseaudio-discuss mailing list <a href="mailto:pulseaudio-discuss@mail.0pointer.de">pulseaudio-discuss@mail.0pointer.de</a> <a href="https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss" target="_blank">https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss</a> </div></div></blockquote></div>