Bram Bos wrote: > const char *card = "hw2"; // just for this example, don't hard-code this! "hw2" is not the same as "hw:2". > const char *selem_name = "PCM"; // for some reason Master didn't work, but PCM does... This must be the name of a mixer element implemented by the card. (Some USB devices don't have any.) Regards, Clemens