A method and an apparatus for diagnosing memory leak. The creation of one or more databases may result in an array correlating individual onomastic elements and normalized probabilities that the onomastic elements belong to various categorizations. When the unit is connected to a source of AC power, the AC power drives the audio unit which may be a radio or a combination radio and CD player and the AC source also powers a charger which recharges a battery pack if a battery pack is inserted into the charger receptacle. Methods of predicting athletic ability based upon a plurality of athletic parameters are also disclosed.