i don't know whether mod will allow this .. but here goes..
The.Bourne.Identity.2002.1080p.HDDVD.x264-BLiND AUDiO..............: English, AC3 5.1,
will play stereo on rca jack
Goodfellas.1990.BluRay.1080p.AC3.x264.dxva-EuReKA Audio Codec.........: AC3
will play stereo on rca jack
The.Hunt.For.Red.October.1990.1080p.HDDVD.DTS.x264-CtrlHD Audio: English DTS 5.1 - 1536 KB/s
No soundThe.Dark.Knight.2008.BluRay.1080p.DTS.dxva-EuReKA Audio Codec.........: DTS
no soundQueen.Rock.Montreal.1080p.BluRay.x264-TRiM
AUDiO..........: English 2.0, FLAC from 24 bits 48khz PCM
No sound (not even sure whether optical will play this)
English 5.1, 1536 kbit/s DTS core from 24 bits 96khz DTS HD
No sound English 2.0, 128 kbit/s AC3 commentary with Brian May and Roger Taylor
Will play stereo on rca jackfor queen u can actually click on the audio to choose which audio u want...
so when u go downloading u see dts as codec .. u know cannot play unless u have optical out with dts amp.. others should be able (this same goes for the hdx1000 and popcorn)
but again dvico 6500a . semua boleh step down to stereo...normal rca jack...

That why, in avsforum there is a thread where they request WD to include function step down to stereo in next firmware update.