Mobile Ring Tone Sales Hit $3.5 Billion: Sales of mobile phone ring tones, those tinny song recordings programmed into millions of cell phones around the world, jumped 40 percent in the past year to $3.5 billion, according to a study released Tuesday.
The worldwide sale of ring tones, which started as a marketing gimmick for music labels and mobile phone companies, is roughly equivalent to 10 percent of the $32.2 billion global music market.
