Hi All, My alsa version is 1.0.27 and my kernel version is 3.10.14. There are two sound card on the system. A chips on the mother board which is driven as far as I know by an hda intel driver and a PCI xonar STX card. On the first one mixing is possible : I mean that if a sound process as aplay for instance is running and you start another one like mplayer for instance sound is mixed and you might listen to the two sources taht are played. With the xonar STX card it does not seem to be possible. If an aplay process is running and you try to start a mplayer process for instance it failed with error message indicating taht the device is busy. I don't know where it comes from. Does the asus xonar STX card not have natively ability to mix sound ? Does the driver not implement this feature ? I know that in the past it might be necessarry to activate something like dmix that was no longer needed by newer chips since they have ability to mix without any work of the driver. Is it not the case with the xonar STX card and do I have to setup something like dmix ? Regards Pierre ------------------------------------------------------------------------------ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user