Recently, i am really interested in audio topic, although this is an old post but i still wanna share my experience. From an audio perspective, there’s no difference between FLAC or ALAC files that are recorded at the same sampling rate. That’s ultimately the case because all FLAC or ALAC files are compressed versions of a “lossless” original, which means that the original file, when compressed in either format to make it smaller to store and transmit, doesn’t lose any of its quality when it’s played on your system. So, if the difference isn’t audible, then why are are you here and why do you get the sense that there’s such a zeal and fervor over the FLAC vs. ALAC battle? It has nothing to do with audio quality and everything to do with the perceived—emphasis on the word “perceived”—Apple ecosystem lock-in and consequent player choices. To oversimplify things, ALAC is an Apple-based solution to compress lossless file while FLAC was initially developed as an “open” format. Some high-res audiophile music download sites, like HDTracks, will give you both ALAC and FLAC, or they will give you just one and not the other. This has everything to do with their long-term disk storage and nothing about audible differences or that one format is “better” than another. more info about FLAC and ALAC: https://pooraudiophile.com/2013/07/difference-between-flac-vs-alac-recordings.html and here is a way to convert FLAC to ALAC or convert ALAC to FLAC: http://www.videoconverterfactory.com/tips/flac-to-alac.html i have been using this audio converter for almost 2 years, hope it useful for you too.