Description of problem: no sound when running *.flv and *.mp4 files, whatever be the application used (amarok, xine, mplayer, vlc,..)

[~@mageia3_64 ~]$ vlc dwhelper/xyz.mp4 
VLC media player 2.0.6 Twoflower (revision 2.0.6-0-gbe9623c)
[0x2277108] main libvlc: Lancement de vlc avec l'interface par défaut. Utilisez « cvlc » pour démarrer VLC sans interface.
[0x23442d8] qt4 interface error: Unable to load extensions module
[0x7f563cc35e58] main decoder error: no suitable decoder module for fourcc `mp4a'. VLC probably does not support this sound or video format.

~@mageia3_64 ~]$ vlc dwhelper/xyz.flv
VLC media player 2.0.6 Twoflower (revision 2.0.6-0-gbe9623c)
[0x1eea108] main libvlc: Lancement de vlc avec l'interface par défaut. Utilisez « cvlc » pour démarrer VLC sans interface.
[0x1fb72d8] qt4 interface error: Unable to load extensions module
[0x7f25f8c32708] main decoder error: no suitable decoder module for fourcc `mp4a'. VLC probably does not support this sound or video format.

[alain4@mageia3_64 ~]$ amarok dwhelper/xyz.mp4 
QWidget::insertAction: Attempt to insert null action
Trying to set an invalid MediaSource -> ignoring.
********************************************************************************************** 
** AMAROK WAS STARTED IN NORMAL MODE. IF YOU WANT TO SEE DEBUGGING INFORMATION, PLEASE USE: ** 
** amarok --debug                                                                           ** 
********************************************************************************************** 
[alain4@mageia3_64 ~]$ X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 20 (X_GetProperty)                                                                                                                                           
  Resource id:  0x5c00012
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x5c000d7
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0x277f658
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    140 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x5c000d7
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x5c000d9
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0x17341960
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    140 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x5c000d9
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x5c000db
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0x277f660
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    140 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x5c000db
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x5c000dd
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0x17341960
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    140 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x5c000dd
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x5c000df
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0x277f688
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    140 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x5c000df
X Error: BadValue (integer parameter out of range for operation) 2
  Major opcode: 53 (X_CreatePixmap)
  Resource id:  0x0
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Major opcode: 14 (X_GetGeometry)
  Resource id:  0x5c000e1
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 3 (X_GetWindowAttributes)
  Resource id:  0x277f628
X Error: BadDrawable (invalid Pixmap or Window parameter) 9
  Extension:    140 (RENDER)
  Minor opcode: 4 (RenderCreatePicture)
  Resource id:  0x5c000e1

in the same conditions (same files, same computer,...) mageia2 x86_64 normally works




Version-Release number of selected component (if applicable):vlc, amarok, xine,...


How reproducible: download a clip on youtube with firefox extension downloader-helper and process


Steps to Reproduce:
1.vlc xyz.flv(mp4)
2.amarok xyz.flv(mp4)
3.mplayer xyz.flv(mp4)


Reproducible: 

Steps to Reproduce: