conrad berh?rster wrote: > i'm want to use the asoundrc for my music production. Why? What do you want to do that does not work with the default configuration? > if i try > aplay test.wav > everything went fine. but after > aplay -D hw:0,0 test.wav > i get > Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Mono > aplay: set_params:901: Channels count non available "hw" goes directly to the hardware, without automatic sample format conversion. Your hardware cannot play mono data. HTH Clemens