Do you know of a site where you can purchase .Wav Atmos files?
My impression is that ADM BWF (a wav file that can accommodate Atmos metadata) is not intended for the consumer market. I've only ever seen Atmos downloads sold in the mp4 format.Are you referring to the ADM BWF files? We stopped accepting them from clients as they're too large to download (a single song can be 3-5 GB) and only playable from an Atmos-equipped DAW or Dolby's $400 reference player software.
https://professionalsupport.dolby.com/s/article/Dolby-Atmos-ADM-Profile-specification?language=en_US
New site looks great, by the way!