Media delivery system with improved interaction

A method comprising:

• receiving, by an accessory, a change in a volume setting for a portable media device communicatively coupled with the accessory, the change in the volume setting being received via an input interface of the accessory;
• and
• providing, by the accessory to the portable media device, a message to update the volume setting for the portable media device in accordance with the change.

A method comprising:

• receiving, by an accessory from a portable media device communicatively coupled with the accessory, a notification to update a volume;
• and
• in response to the notification, modifying, by the accessory, an audio signal received from the portable media device, the modifying causing the update of the volume.