option "device" d "set PCM device" string typestr="device" default="plughw:0,0" no
option "channels" c "number of channels (only neccessary for raw audio)" int typestr="num" default="2" no
option "sample_rate" s "force given sample rate (only neccessary for raw audio)" int typestr="num" default="44100" no
+option "bufsize" b "input buffer size" int typestr="kilobytes" default="64" no
+option "prebuffer" p "delay playback until buffer is filled" int typestr="percent" default="100" no