I'll be getting the Reus upgrade soon. I'm converting my entire set of about 500 CDs to digital files for use in the car. I want to use the purest sound files with no compression of any kind so WAV or AIFF are my apparent choices. I understand that WAV files have a problem with metadata but AIFF handle it just fine. Does anyone have experience with AIFF files on his or her Model S. And please don't tell me to use FLAC. I'm not going there.