Contemporary personal stereo players are compact, easy to use, and provide intense, high-quality sound that can be heard anywhere anytime. The players are reasonable in price, and have become very popular among children and adolescents. Little is known about listening habits among children and adolescents in general. Even less is known about the affect on hearing, if any. With the purpose of mediating attention to the fact that music can cause hearing damage, a manikin for assessment of MP3 player exposure has been build. The manikin has an IEC 60711 simulator in one ear, a gumstix computer in the belly, and a display on front that shows listening level (Laeq) according to ISO 11904-2. The scale also indicates how long one can listen at that given level without exceeding a workday exposure level of 80 dBA. The manikin has proven useful as a tool for mediation, and may even (in a revised version with data transfer options) be helpful in a field study of listening habits among children and adolescents.