After downloading and installing AudFree Spotify Playlist Converter, run it and the Spotify app will automatically launch. Find your required Spotify tracks, copy the link, paste it in the search box of AudFree, and click "+" icon to load up.
Touch the menu icon at the upper right corner. Go to "Preferences" > "Convert". Based on your demand, choose a compatible output format and customize output parameters as you like.
Return to the first interface and hit on "Convert" to start the conversion process. Once completed, navigate to the destination folder to locate the converted Spotify tracks.
Now, your required Spotify music must have been converted to the format that GoPro Quik supports. You can now set about the task of adding Spotify music to GoPro Quik without any limit.