It's a fan album with some relaxing music inspired by the Aria world (so it's not really arrangement of existing anime tracks).

Info here (http://vgmdb.net/album/36875)
Crossfade here (https://soundcloud.com/c-hicken/aria_xfd#new-timed-comment-at-439695)

Any format is fine (won't be unrealistic and ask for flac or such heh, but if someone has it, why not lol)

damn, I do these requests so rarely, no wonder the end of the world is coming lmao

O yea, the second album will be released at this winter comiket - crossfade (https://soundcloud.com/c-hicken/vol-2#new-timed-comment-at-453887)