Elephants are a quintessential animal for zoos and wildlife parks. These zoo-housed animals serve as ambassadors to educate the public about their respective species as well as wildlife more broadly. As with any zoo-housed animal, physical and cognitive engagement and exercise are crucially important to the well-being of zoo-housed elephants. A key component of cognitive stimulation for elephants is a complex and variable environment. We designed and deployed an instrumented enrichment device for African elephants (Loxodonta africana) at Zoo Atlanta, augmenting their existing food-based environmental enrichment with audio cognitive enrichment. To gauge elephant interest in our device, we compared usage of the existing food-based enrichment before and after augmentation with audio. The device was installed for 7 days and 10 hours and had a positive impact on frequency and retention time with the existing enrichment, increasing frequency of usage by 81 instances and retention time by 3 hours, 28 minutes, and 23 seconds. While our audio enrichment device was successful at collecting data with 88.14% accuracy, improvements could be made to the sensing methods to reduce the rate of false actuations. Overall, the study is an example of successfully collecting longitudinal data with elephants and showed that these elephants responded positively to sound enrichment.