Devices, methods and computer-readable code for simultaneously monitoring the content of at least two streaming audio content channels are disclosed. In some embodiments, the monitored content is analyzed, and one or more features of the monitored content channels are computed, including but not limited to music classification features, content genre features, and spoken content features. These computed features may be used, for example, to compute a rating or score for each monitored audio channel, for example, a rating computed relative to user listening preferences, expressed, for example, in preference rules. In some embodiments, the presently disclosed device includes a channel selector for automatically tuning, for example, to a channel assigned a higher rating at a given time. Alternatively or additionally, content rating scores may be displayed to a user who manually selects and tunes to an audio content channel.