The very cool Norwegian website 2L is offering more high resolution content. If you haven't browsed the site yet I highly recommend it. In addition to Marianne Thorsen / TrondheimSolistene in full stereo and 5.1 surround at 24/192, 2L is offering a download of the first Bluray Audio album. No need to purchase a Bluray player when you can just download the content! Checkout the album booklet for some detailed information about high resolution audio from 2L.
Here is a link to some very good high resolution content and a link to the neat album booklet for the first Bluray Audio disc.