Most DVDs play fine on both my windows media player, and Nero on my 8300 with audilgy soundcard.

I have one or two dvds however, including "LOST" series 4 I just tried to play, where the adverts and bonus features play both sound and vision, but where in Windows media player, the main programme, episode, plays vision, but I no longer get any sound.

The same DVDs that I have this trouble in media player, do play sound in Nero, but the image turns to coloured blocks.

Any idea what causes this and a way around please?

Many thanks

Nambo