Hello, I suggest you use Qian Qian Listening to convert FLAC into WAV format, and then convert WAV format into mp3 format. Can be converted into 128kmp3 format, or 192kMP3, or 320kMP3, of which 320kMP3 has the best sound quality and the largest file. If you need a smaller file, change it to 128kMP3, but the sound quality is average.