Quick Player Error

[Montree]

Hello
I'm a new user in QT.
The first run, I try to run Quick Player in example list but when I select MP3 file it cannot play.
I run with debug mode and this the result. Please help me solve this ploblem.
Thank
!http://image.ohozaa.com/i/a36/PiUDQK.png(Quick Player Error)!