I have 4.1 creative quadraphonic speaker set it works fine on jetaudio but on media player classic it play only 2 speaker i dont know why please help how to setup quadraphonic 4.1 speaker in media player classic...

u playing audio or video?

because MPC dosent normalize 2.1 to 4.1 like other players do.
your video must have 4.1 audio to play all 4 speakers

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Thanks

i am playing video i think this is the problem