1. A wireless network service for delivering audio tracks to a user via a mobile wireless terminal, comprising; a server for maintaining a plurality of audio tracks, wherein each audio track is stored in conjunction with a respective cadence tag; and a cadence evaluator that identifies a substantially instantaneous user status and selects a cadence tag corresponding to the user status, wherein the substantially instantaneous user status comprises a geographic location within a plurality of predetermined zones, and wherein the cadence evaluator includes a mapping for associating each zone with at least one respective cadence tag; wherein the server delivers and the mobile wireless terminal reproduces a selected audio track having a cadence tag matching the selected cadence tag.