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Possible Duplicate:
Codecs to play .vob files in Windows Media Player?

I have installed Windows 8 Developer preview, but when I try to play VOB files using Windows media player, it shows a menu : "Play all music" and when I click it, it shows some music that played before in Media player.

Also I have tried with Windows 7 Codec Pack installed but nothing changed.

How to fix this problem?

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marked as duplicate by Tom Wijsman, Ƭᴇcʜιᴇ007, Mokubai, Sathya Jan 31 '12 at 7:03

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Uninstall Windows 7 Codec Pack since it does not seem to work properly and try to install K-Lite codec pack. Then run Codec Tweak Tool and figure out what is the default codec for each media type (hoping that Windows 8 codec-related registry structure is similar).

Force non-Microsoft codecs to be default by checking their radio button.

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