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The use of speech and auditory interaction on wearable computers can provide an awareness of events and personal messages, without requiring one's full attention or disrupting the foreground activity. A passive "hands-and-eyes-free" approach is appropriate when users need convenient and timely access to remote information and communication services. Nomadic Radio is a distributed computing platform for wearable access to unified messaging via an auditory interface. We demonstrate the use of auditory cues, spatialized audio, and speech I/O in the wearable interface for passive awareness, scaleable notification and navigation/control. The architecture is designed for wired audio wearables and has been extended for distributed wireless operation.