15. A processor-based method for producing supplemental information for media containing embedded audio codes, wherein the codes are read from an audio portion of the media, the method comprising the steps of: receiving the audio codes at an input from a data network, said audio codes being received from a device during a first time period, wherein the audio codes represent a first characteristic of audio portion; receiving semantic audio signature data at the input from the data network, said semantic audio signature data being received from the device for the first time period, wherein the semantic audio signature comprises at least one of temporal, spectral, harmonic and rhythmic features relating to a second characteristic of the media content; successively associating the semantic audio signature data to the audio codes in a processor for the first time period; and processing the associated semantic audio signature data and audio codes data to determine changing second characteristics in relation to the first characteristic.
18. The method of claim 15 , wherein the second characteristic data comprises one of genre, instrumentation, style, acoustical dynamics and emotive descriptors.