Are there any labels with Rock, Pop, Folk Rock and Easy Listening content in Hi-Rez? Thanks.
DVD-Audio discs are your best bet. They can be ripped to hard disc, but require a DVD-A player. Grateful Dead, Yes, REM, David Crosby, Steely Dan, Donald Fagen, etc. Lots' of Neil Young hirez on regular DVD (rippable 24/96 PCM) like Live at Massey Hall, Sugar Mountain, Greatest Hits, etc.
Already ripped and downloadable? There are some Kinks, Carla Lother, Dave Grisman, Alison Kraus/Robert Plant and others on HDTracks.