I tried the following suggestions from the previous response. But they are not working: $ mplayer -ao esd test.mp3 $ mplayer -ao alsa test.mp3 But neither command works. Their console output is shown below. Any other suggestions anyone? Thanks. $ mplayer -ao esd test.mp3 MPlayer 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team CPU: Mobile Intel(R) Pentium(R) 4 - M CPU 1.80GHz (Family: 15, Model: 2, Stepping: 7) CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2 mplayer: could not connect to socket mplayer: No such file or directory Failed to open LIRC support. You will not be able to use your remote control. Playing test.mp3. Audio file file format detected. ========================================================================== Opening audio decoder: [mp3lib] MPEG layer-2, layer-3 AUDIO: 22050 Hz, 2 ch, s16le, 64.0 kbit/9.07% (ratio: 8000->88200) Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3) ========================================================================== Could not open/initialize audio device -> no sound. Audio: no sound Video: no video Exiting... (End of file) $ mplayer -ao alsa test.mp3 MPlayer 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team CPU: Mobile Intel(R) Pentium(R) 4 - M CPU 1.80GHz (Family: 15, Model: 2, Stepping: 7) CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1 Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2 mplayer: could not connect to socket mplayer: No such file or directory Failed to open LIRC support. You will not be able to use your remote control. Playing test.mp3. Audio file file format detected. ========================================================================== Opening audio decoder: [mp3lib] MPEG layer-2, layer-3 AUDIO: 22050 Hz, 2 ch, s16le, 64.0 kbit/9.07% (ratio: 8000->88200) Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3) ========================================================================== Could not open/initialize audio device -> no sound. Audio: no sound Video: no video Exiting... (End of file)