The file Silent_Light.mp3 plays incorrectly with mplayer using -ac mp3 and -ac ffmp3. mpg123/mpg321/xmms and 'mplayer -ac mad' have no problems with it, however. The file is 44kHz, 128kbit, but with -ac mp3 I get MP3lib: init layer2&3 finished, tables done AUDIO: 24000 Hz, 2 ch, 16 bit (0x10), ratio: 3000->96000 (24,0 kbit) Selected audio codec: [mp3] afm:mp3lib (mp3lib MPEG layer-2, layer-3) and file playes slowed down 2 times, which sounds horrible. With -ac ffmp3 output is AUDIO: 24000 Hz, 1 ch, 16 bit (0x10), ratio: 3000->48000 (24,0 kbit) Selected audio codec: [ffmp3] afm:ffmpeg (FFmpeg MPEG layer-3 audio decoder) and the sound is even worse... With -ac mad: AUDIO: 44100 Hz, 2 ch, 16 bit (0x10), ratio: 16000->176400 (128,0 kbit) Selected audio codec: [mad] afm:libmad (libMAD MPEG layer 1-2-3) And normal sound.