In recent years, the rapid development of Metaverse technologies has revolution-ized the e-commerce landscape, introducing immersive and interactive experienc-es once considered futuristic. This article explores the role of sound in supporting e-commerce applications in the Metaverse. Often an overlooked component in virtual environments, sound plays a crucial role in creating a multi-sensory shop-ping experience that engages users on a deeper level. This research explores the various ways in which sound can be integrated into Metaverse-based e-commerce applications, including spatial audio, ambient soundscapes, and interactive audito-ry feedback. It examines how these auditory elements can have a significant im-pact on user engagement, emotional connection, and overall satisfaction with the virtual shopping experience. Finally, the paper analyses potential challenges and considerations related to the implementation of sound in Metaverse e-commerce applications, such as privacy and accessibility issues.