We describe a concept facilitating to ease the nomadic access to mobile multimedia applications. In order to provide convenient access to the content, the details of the access are semi-automatically customized to adaptation attributes. Through this we can handle various adaptation tasks on the application level. This requires a flexible system architecture permitting to steer and control the adaptation process as well as for the transmission of data between the application residing on the mobile access device and the service host. The devised broker concept will be explained in terms of a scenario which shows the adaptation of a user and device dependent mobile media service.