Set4Play is a service where group-fitness instructors, personal trainers and health professionals can create motivational music. The user logs in onto a personal website and picks tunes from a huge music archive. The tunes are then forged together to make a complete mix. All music handling is web based, no music is stored on the user's computer. The service is approved by the copyright owners as a legal way to manage music. The Set4Play app is used to play the created mixes. Simply tap the synchronize button. The mixes are now transferred to your device. Connect to a sound system!