There a couple of key differences in the WAV and M4A audio files.
The WAV file is the highest audio quality we carry, but does take up more space when downloaded onto your computer/laptop.
The M4A is slightly compressed in audio quality, but uses up less space on your computer's Hard Drive when downloaded.
*If you are using the Playback app, we suggest either purchasing the M4A files or our AppTracks product.
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