A candle assembly includes a support base with a melting plate upon which a meltable solid fuel rests and a wick holder to hold a wick and engage the meltable solid fuel, and a control unit having at least one electrical component to control at least one of a sound emitting system or a light emitting system. In another aspect, a candle assembly includes a sensor configured to detect the presence of a flame disposed on the wick and controls the at least one of the sound emitting system or the light emitting system, and a lock and key mechanism. Another candle assembly includes a replaceable container to hold a meltable fuel element with a wick and a first mating surface and a control unit having at least one electrical component to control at least one of a sound emitting system or a light emitting system. In another aspect, the control unit has a second mating surface complimentary to the first mating surface and a sensor configured to detect the presence of a flame disposed on a wick. The sensor controls the at least one of the sound emitting system or the light emitting system, and the first mating surface is configured to mate with the second mating surface in a pre-selected spatial orientation to permit the sensor to detect the presence of a flame.