i used to work there and look how much i know LoL, if ur sales, just know the basics on the cd players. Thats the biggest seller in there are the cd players. Sometimes ull have some prick come in ask u a million questions about em but besides that its usually old people lookin for somethin to the car. Just try n sell the most expensive things. If u go over quota, the managers get a bonus and they will love you!