I currently have a FiiO X3 2nd gen paired with a E12A. The main headphones I use are the Fidelio X2 and the ATH-M50x. \n\nI listen to 90's alt rock and classic rock mainly (among may other genres). \n\nI currently house my music in FLAC format on a Plex server. It would be great to be able to stream to the portable music device. Are there any portable devices which can have Plex installed on them? \n\nCan you install Plex on the HIDIZS AP200? Any other upgrade options I should consider? I previously owned the FiiO X3 1st gen.\n\nThanks!