Can you sell DLC on Apple Arcade? On the Google Play Pass games all the dlc is included.

No you have to edit the file for CD metadata and convert it to flac so you can pretend it was ripped from a CD, as is P2P file sharing tradition. Bonus pts if you put it through some filter to introduce a bunch of noise into the audio. Then ask in chat how you can convert a 128kbps mp3 to flac to increase the quality. Priceless.