The player doesnt allow playing Flac files

I bought the HD player Pack
- There is no option to play flac files. I added them from icloud and they dont show in the Onyko player.
- The instruction for copying files to the player dont apply anymore.
- There is no file transfer option in iTunes for this application.

slawo_c about Onkyo HF Player - Hi-Res Music, v2.5.0