Having just re-ripped my CD's as AIF onto a NAS drive to get as good a digital re-play via Apple TV and WD live tv boxes with random play when being lazy, I decided to try out some 24 bit FLAC files.
So after a few google searches I stumbled across the Society of Sound on The Bowers and Wilkins web site. For those of you that do not know about it it is quite good, you can join for a year for £34 and get 2 new album releases a month, also as I found out you can download all those already there, 30+ albums. Society of Sound is a collaboration between musicians, B&W and Abbey Road Studios to make high quality music at at studio quality available to the public. Peter Gabriel is one of the famous artists. There is quite a mix of genres and there are some very good listening experiences, The Widerness of Manitoba - When You Left the Fire being a must hear.
In my opinion if you want to get into FLAC then this site is well worth trying out. The quality is exceptional.