Well, im collecting and got alot of music in FLAC format, basically FLAC is an exact copy of the original cd.
So no compression or qualitty loss like it is on mp3, this format is awesome when burning to cd or listening with a DAC like i have.
But..i also got an iPhone and Apple isnt supporting FLAC cause they have their own version called ALAC i dont know anything about and i honestly dont wanna know =D
Oh well i grabbed a free program that lets you easily convert single tunes or whole folders of FLAC files to mp3
Flacsquisher its the name of that one, got a dropbox link here but be sure to check the site aswell for updated versions
and here is the official sites link
Only thing i want you to do, and that just because you probably wanna keep the best possible qualirt right?
In the command line field mark everything and copy this string
-q 0 -b 320
That way you will end up with mp3files ecoded at 320kbps, and thats really a nice kbps sound, you will be able to enjoy ncie quality on your phone aswell as other devices you wanna use