Quick run through:
The Amuse app - Both in iOS and Android, download on App Store or Google Play and create your account by logging in through Facebook or Google. Confirm your real name (this is important as this is the person responsible for the tracks and will receive the payouts) and give us your artist name. Provide phone number and email adress so that we can contact you if we need to.
Cover Art - Min 1400x1400 pxl, not blurry or pixelated, no social media handles.
Music/Audio File - .wav-file or FLAC, sample rate at 44,1 kHz, stereo and 16bit
Drop Box - Download the free app Dropbox to store your music and cover art for easy access.