#93 Mplayer fails to play/decode audio files correctly

[jorasse]

Tested on APF27:
* OSS or ALSA interface gives the same result
* .ogg are "jerky"
* .mp3 are not audible
* webcast are not audible:
# mplayer -cache 128 -vc dummy -vo null http://live.radio-gresivaudan.org:8000/RadioSaintAffrique