Hello!,
I've been listening to PC Audio for the past 2.5 years, when I made the shift well it wasn't great rather not on par with the CD-Player but I pursued it only for convenience sake as I'm very disorganized to keep my cd's in order and it was a major pain for me to keep changing the cd's after a couple tracks and the frustration of finding the cd when I need it.
I believe a Computer transport today will "BETTER" any cd-transport available on the market as long as its executed correctly, I've tried Windows, Mac OS X, and Linux playback.
All 3 operating systems sound very different while windows being the most convenient for file format support (Flac support) mac being the best interface (iTunes) and linux being downright poor for playback tried different variants of MPD but nothing great yet.
For Windows at the moment the best choice would be use Windows 7 with J-River (WASPAI-Event Style output) which makes sure the USB Audio stack is optimized and override's the windows 7 usb stack.
Foobar is only great in Windows XP with ASIO and if your device supports Kernel Streaming then that would be your best option, but on windows 7 it sounds anemic in comparison, J-River betters it in every parameter.
Mac OS X - This is perhaps the easiest to setup no gibberish like asio, kernel streaming and WASAPI just plain plug and play.
iTunes by default is as good as using Foobar on Windows XP but not better than J-River on Windows 7.
Amarra the latest version 2.1.1 is a "Great" player beats default iTunes hands down, but the highs are for a lack of a better word softer / less pronounced but the micro-dynamics (inner details) are superlative with phenomenal depth (layering, front to back presentation)
Pure Music- This is a anti-thesis of Amarra sound its more forward on well recorded material more open but less forgiving, its closer to the character of J-River.
On the whole I think Mac is more analog and easier to listen to but the biggest DOWNSIDE of a Mac setup is no native support for Flac, amarra and pure music can playback flac but its still not convenient, if one wants to use mac then I suggest they shift and maintain their library in AIFF or ALCC I've considered it but not yet pulled the trigger as I download a lot of music too and everything only comes in flac and thereafter to always convert it is quite a pain.
Hope this helps others while building their servers and I promise you its a solution that is on par or better than a CD-Transport.
Equipment used with computer audio;
Weiss Minerva DAC / Firewire Bridge
EMU 1212M (Very colored but fun!!!)
Bow Technologies DAC (i2s>usb)
Various other dacs that were borrowed from friends that were used with the EMU and Weiss.
Thanks,
Best Regards,
Satyam Bachani.