Please note the qualifier on the above list, "uncompressed or hi rez" Not to be critical but DGM live for example will not have any hi rez audio.
simplest place for 24/48 and 24/96 files would be archive.org. there is actually a specific search function to locate 24 bit recordings. Depends on the sort of music you like but I am a Dead Head (Hello, my name is John, and I am a Dead Head) and you can find lots of simply outstanding live recordings of Bob Weir and Ratdog (I recommend the one from the Stir in 2007 with Steve Kimock and Jamaica from this January), Phil Lesh and Friends (any of the ones recorded during summer tour outdoors) and Steve Kimock (the 24 bit stage recordings are amazing!)
You can also check out digitalsoundboard.net for some 24 bit recordings you can purchase as flac files.
Just BTW, I don't store these on a hard drive because the file sizes are so large. I use DVD-Audio Creator, and nice program for like 30 bucks that will burn these onto a DVD that can be played with just about any DVD player.