Vodafone launched it's upgraded Caller Ringback Tone (CRBT) service on the 16th, offering users a new interface and shuffle feature. A lot of us in The States are unfamiliar with CRBT. If there is a carrier that offers it here, I don't know about it. The only reason I know what it is is because every time my wife calls someone overseas, she hears a song instead of the old ringer sound.
That seems like more than enough to offer the people calling you, but shuffle? And I thought a copy of Banana Phone was all I needed to be prepared for the CRBT revolution. I thank my lucky stars for the hundreds of people on You Tube who think changing the pitch and speed of a track merits an upload with the remix tag. Callers, prepare to be tortured.