Hi all, when I use the pipe below: gst-launch-0.10 playbin2 uri=pushfile:///var/tmp/usb/sda1/audio_src/test1.mp3 I got the result: the first 30 seconds, the sound is intermittently. and then the sound is more smoothly. Does anyone have idea about this phenomenon ? it seems alsa device does not have enough data to playback, right? Any input is appreciated! Thanks! Best Regards, Soho