To get high quality music from source to destination, we have to look at several important devices:
The source - must have lossless and error free ripping
The music server - what to do when you have multiple servers and some of them might not be a server at all (a family could have more than 1 since everyone in the family collect their own music!). For example, the audiophile dad has big collection on a NAS server, wife has some high-bit rate iTune files on her Mac, etc.
Transfer mechanism - no DAC -> ADC -> wire, prefer direct digital from source to destination. If send by wireless, must not have interference with any existing protocol.
Destination DAC - S/PDIF in and then analog out to preamp or power amp depending on the DAC's design and your configuration
Many existing solutions are looking at the problem for specific application. Client such as LinnDS, Logitech Transporter require the use of existing WiFi network (that imply sharing of network bandwidth) and a music server.
We are working with partners to solve all of the above problems, including sending 24bit/96khz audio directly from any device (computer included) wirelessly (but without network bandwidth sharing) to any device.
I believe Popcorn Hour is coming out with a device that allows for direct 7.1 HD analog decoding on board, with optional blu-ray transport.
The Nuforce (wireless) Audio Mesh Network technology to be release in the summer will be the foundation and enabling technology of many things to come

Sorry, this is highly confidential stuff so I can only offer some hint.
I will start another topic later on achieving this dream.