In this talk, we will discuss using a unique treatment package utilizing a Teaching with Acoustical Guidance (TAGTeach) procedure paired with a multiple reinforcement schedule to decrease motor stereotypy in a 15-year old boy diagnosed with autism. TAGTeach has been effective in both neurotypical and special needs populations. We will discuss the use of positive reinforcement upon specific occurrences of behavior using an acoustical aid. The acoustical aid was used to reinforce incompatible behavior, hands to side and hands together during transitions, which were chosen based on the operational definition of stereotypy. The acoustical aid was also used during transitions to decrease elopement, requiring the client to have shoulder alignment with the instructor. We used a multiple reinforcement schedule to signal a condition where stereotypy was a free operant as part of the client's treatment program. We will discuss our results, which showed decreased levels of stereotypy across multiple settings, as well as an increase in appropriate transitions. We will also discuss our implications of this study as it suggests new technology to use in treatment of specific behavior change in autistic populations. We will also discuss the limitations of our treatment regarding the types of problem behavior that can be treated with this technique as well issues regarding generalization.