24-bit losless music

Hi!

Since now, I own a fiio high-res player, I´m looking for content. It plays 192kHz/24-bit audio (which is not the same as 192kbit!!) and finding music for it is quite hard. Here, I can find a handful of 24-bit audio, but most of it is vinyl rips in 24bit.
Most music nowdays exists in 24-bit in studio recordings, but off corse when transferred to a cd, it goes down to 44,1khz/16-bit.
Lossless music is in this format for the most cases, also.
I heared that itunes music is available in 24bit as well...
So, where to find content?