Just noticed this mac player
[Fidelia] by Audiofile Engineering that looks fabulous and thought of this thread. Don't know if will decode/playback the higher resolution encoded in HDCD's as this is not specifically mentioned. I'm thinking of giving it a try, is anyone using Fidelia???
http://www.audiofile-engineering.com/fidelia/Technical Specifications System Requirements
Hardware
Mac computer with an Intel processor
1 GB of RAM (we recommend 2 GB or more)
Display with 1024-by-768 resolution highly recommended
A hard disk with 1 GB or more free space
Software
Mac OS X 10.6.8 (Snow Leopard) or 10.7 (Lion)
QuickTime 7.2 or later highly recommended
Feature List
Elegant design
Sleek Intuitive controls that contemporary Mac users demand
Classically styled volume dial buffered by single-click Mute and Dim functions
Individual track details, stereo levels and audio waveforms displayed in crisp, eye pleasing fashion with no superfluous trimmings
Powered by iZotope
iZotope's industry-best 64-bit SRC&trade (sample rate converter) to achieve optimum sonic fidelity.
Discerning listeners can select real-time dither via iZotope's MBIT+™ technology.
Maxium formats
Supports AIFF, WAV, CAF, MP3, AAC, Apple Lossless, Ogg Vorbis, or FLAC formats
Supports sample rates up to 192kHz and bit depths up to 32 bit floating point
Effects
Audio Units and VST
Customize with up to three effects
Library
Direct access to your iTunes library
Fidelia Library which additionally supports FLAC files (and more hi-res formats to come!)
Option to convert files to preferred format when adding to Fidelia Library
Remote
Beautiful Fidelia remote available in the iOS App Store