From AIFF to Flack

Is it possible to change the audio format from AIFF to Flack format using the Audacity app. On my car player stick, the music in Flack format plays, but the songs in AIFF format do not

Yes (as long as you can open the file in Audacity), but it’s FLAC (free lossless audio codec) :wink:

Go to File → Export Audio and then select FLAC as your Format.

It might be easier find a specialized conversion program that can easily batch-convert. (I use Kabuu Audio Converter or TAudioConverter but they only run on Windows.)

“MediaHuman Audio Converter” can convert to FLAC. See here.