Other 7 FLAC file converters you should know Best online free FLAC audio converter for you Best FLAC converter for Windows and Mac you should try With that said, the following sections discuss about some of the best paid and free FLAC converter applications that can be installed on your computer, or can be accessed from a web browser. If you deal with a lot of audio files, and work on multiple projects from time to time, it is imperative for you to have access to an efficient FLAC converter that can not only transcode FLAC to AC3, WMA, MP3, etc., it must also be capable of doing vice versa such as AC3 to FLAC, MP3 to WMA, and much more.