i think i'll try this "-ao alsa:pcm=default". but as i already mentioned, the softdevice complains about the ac3 stream. perhaps something like "-ao alsa:pcm=default#ac3=default#" will do the job. so, my real problem was, that i hadn't found any information in how to build up this "-ao whatever" line. it would be nice to know, how this whole '-ao alsa:"description"' thing is working. e.g. where can if find out, what to use as $dev_name in: -ao alsa:pcm=dev_name# -ao alsa:ac3=dev_name# alex