I occasionally do sound reinforcement for a non-profit arts-promoting organization. I used to play music before events, just to fill the dead air. Gave me an excuse to buy interesting CDs to play that fit with the events. After an event a while back, the organization got a nastygram from Re:Sound, telling them that per Tarriff 5 they must pay a *percentage of the gate* for events where recorded sound was used.
The result? No music is being played before events. No CDs being bought. No musicians being hired to play pre-show tunes. Lose all around.
They are called computers simply because computation is the only significant job that has so far been given to them.