windows XP MMP 不能播放! 咋办? 预谢高手指点 :)

i like some of the music, ktv, at WWDZ, however,about 40-60% of the sites never work _:'( ,

it was MMPlayer 10 before, automatic updated to MMPlayer 11, then deleted MMP 11, and returned to MMP 10,

some music site / link work, some do not, WHY? HOW to solve this problem? thanks.