hi all, I'm trying to get alsa work with kernel 2.6.18.1 on PXA270 platform, after rebuild kernel with CONFIG_SND_PXA2XX_AC97 enabled and boot, device is found. then I build alsa-lib and alsa-utils, and run aplay to play a wav file, but get the following error: # aplay Front_Center.wav Playing WAVE 'Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono aplay: set_params:1005: unable to install sw params: start_mode: DATA xrun_mode: STOP tstamp_mode: NONE period_step: 1 sleep_min: 0 avail_min: 0 xfer_align: 10 silence_threshold: 0 silence_size: 0 boundary: 1434451968 What does this error mean? Can anybody help? Thanks, Damwid