1. An electronic device comprising: a) a network interface enabling the electronic device to receive an Internet radio broadcast; b) a system enabling playback of audio content from an additional content source; and c) a control system associated with the network interface and the system enabling playback of audio content from the additional content source, and adapted to: i) enable a user of the electronic device to select a desired mode of operation from a plurality of modes of operation comprising an Internet radio mode of operation and an additional content source mode of operation; ii) receive and play the Internet radio broadcast when the desired mode of operation is the Internet radio mode of operation; and iii) play the audio content from the additional content source when the desired mode of operation is the additional content source mode of operation.