2. The method of claim 1 , wherein the audio data comprises an audio fingerprint corresponding to the television program, and wherein the channel is determined based on the received audio fingerprint.
2. The method of claim 1 , wherein the audio data comprises an audio fingerprint corresponding to the television program, and wherein the channel is determined based on the received audio fingerprint. 3. The method of claim 2 , further comprising: extracting an audio stream from each of a plurality of television channels; generating, for each of the plurality of television channels, at least one audio fingerprint from at least a portion of the extracted audio stream that corresponds to one of the plurality of television channels; and storing the at least one audio fingerprint in a database indexed by channel.