16. A method of processing audio data, said method comprising: generating speech data from received audio data comprising speech and background noise; accessing a user demographic profiles database having demographic data stored therein; accessing a content database having at least one of content data and advertisement data stored therein; processing user instructions from a first user of a plurality of users, based on a command speech data, wherein the command speech data comprises at least one command by the first user for controlling the audio data processing device; determining characteristics of the first user based on the speech data; and determining interests of the first user based on a conversational speech data that comprises at least a portion of a monitored conversation between the first user and at least a second user of the plurality of users, and further wherein the portion does not comprise a command by the first user for controlling the device.
16. A method of processing audio data, said method comprising: generating speech data from received audio data comprising speech and background noise; accessing a user demographic profiles database having demographic data stored therein; accessing a content database having at least one of content data and advertisement data stored therein; processing user instructions from a first user of a plurality of users, based on a command speech data, wherein the command speech data comprises at least one command by the first user for controlling the audio data processing device; determining characteristics of the first user based on the speech data; and determining interests of the first user based on a conversational speech data that comprises at least a portion of a monitored conversation between the first user and at least a second user of the plurality of users, and further wherein the portion does not comprise a command by the first user for controlling the device. 19. The audio data processing method of claim 16 , wherein said determining interests of the first user comprises identifying keywords within the portion of the speech data.