Why don't I DTS CD files play?

[Ikovacs]

1. Why don’t I DTS CD files play? / Wav files with DTS sound, all DVD players play they good! / Why can’t I select sound? DTS sound from DVD files works it! István Kovács I have: WD TV HD Media Player, serial number WNT185213847, model/order number WDAVP00BE. Firmware : WDTV_1_03_01 .