Use a FLAC Player
One solution to playing a FLAC file on an iPhone is to use a music player app that supports the playback of the format. Using a FLAC player means that you don’t have to know which formats iOS understands. As long as the app accepts the format, it doesn’t matter what the iOS music playback limitations are.
The only downfall to this approach is getting the music collection into the media player. For this reason, a FLAC player is only helpful if your songs are FLAC-based. There are several tools to get an iPhone to play FLAC files (such as VOX or FLAC Player+), but you must provide the FLAC files to those apps.
Use Cloud Storage and a FLAC Player
One option to complete the FLAC file exchange with a media player is to upload the FLAC files to a cloud storage service you use on your phone. After you upload the audio files, import them into the media player.
To complete this process involving Google Drive and VOX, follow these steps:
Find the FLAC file in Google Drive. Tap Open in > Copy to VOX. The file opens in the VOX app and starts to play.
Convert the FLAC File to the ALAC Format
The other option is to convert FLAC to ALAC, which saves the FLAC file to a file with the M4A file extension.
Use an Audio File Converter to Convert FLAC to ALAC
If you have a lot of music that needs to be in the ALAC format, convert the files in bulk with an audio file converter.
To convert FLAC to ALAC, use an audio file converter. MediaHuman Audio Converter is one example of a program for Windows, Mac, and Linux that supports the FLAC-to-ALAC conversion. Load the FLAC files into the program or web service. Choose ALAC as the output format.
Use iTunes to Convert FLAC to M4A
You can also convert FLAC to M4A with iTunes, which is ideal if the audio files are on your computer. Plus, iTunes is compatible with ALAC, so it syncs these files straight to your iPhone.
Open iTunes and go to Edit > Preferences (Windows) or iTunes > Preferences (Mac). In the General Preferences dialog box, go to the General tab and select Import Settings. In the Import Settings dialog box, select the Import Using drop-down arrow and choose Apple Lossless Encoder. Select OK. In the General Preferences dialog box, select OK to return to iTunes. To open your music library, select Music, go to the Library tab, then select Songs. Select the files to convert to ALAC. If you can’t find the files, you may need to import the music into iTunes so that the songs appear in your music library. Select File > Convert > Create Apple Lossless Version. After a few seconds or longer, depending on the number of files being converted, the ALAC-formatted M4A files appear next to the originals in your iTunes library. Now that the FLAC files exist in a compatible format with your device, sync your iPhone with iTunes to copy the ALAC songs to your phone.