I know many people will scoff at the idea, and from a purity standpoint, rightfully so. But the slight quality loss is made up for by the convenience, IMHO.
Anyways, I've ripped my rather small (~25 discs) DVD-A library using DVDAExplorer and encoded those as DTS 96/24-encoded FLACs, which I play back with my Squeezebox Touch (connected via coax to the AVR). When the output level is locked to 100% on the Touch, it's essentially bitstreaming the DTS stream to the AVR for decoding. By doing this, I have my entire library (CD rips, stereo 96/24 DVD-A rips, and DTS-encoded DVD-A multichannel rips) playable pretty much as the OP is looking for, complete with iOS and Android remotes. I've also retained the full multichannel rips on my HTPC, which I can play back over HDMI using Foobar if I ever want to hear the full-quality versions.
Again, not perfect from a purity standpoint, but it's as close as I've been able to get using dedicated audio hardware.