I build a HTPC with the Asrock Q1900-ITX Mainboard
4GB Ram Kingston KVR13S9S8/4
4TB Western Digital WD40EZRX
Windows 7 Professional 64 bit
Suprise with the latest Intel Graphics Driver
Intel® HD Graphics Driver for Windows* 7/8/8.1 version 184.108.40.20658 posted for Ivybridge and Baytrail
HD Audio bitstreaming is working without a flaw on my j1900 platform.
The DTS-HD Dolby True HD formats appears in the supported Intel Audio window.
Tested with Powerdvd 13, you can there choose the compressed HD Audio formats and my Onkyo AVR confirmed with the right DTS-HD Master Audio light.
Great little system.