A $1000 mp3 player? Never even knew such a thing exists (assuming that's all it does, but I'm thinking it probably does a bit more, or at least I'd hope so!).
In my van I generally just use the usb port and a thumb drive, lately got a bluetooth receiver that plugs into the aux port so I can stream them from my phone. The thumb drive for the van and phone I reduce file size to mp3, around the house I usually use FLAC files on my computer/hard drives streamed to my audio systems, altho there are still some mp3s on the drive from non-cd sources but don't usually point foobar2000 at any but the FLAC files.