YouGlish, an emerging online learning platform, offers learners repeated exposure to native pronunciation in authentic contexts, providing valuable opportunities to improve their articulation of words and phrases. This study investigates the impact of a structured instructional module incorporated into YouGlish on enhancing pronunciation and intonation through shadowing practice. A total of 67 college students participated, completing four assignments using YouGlish with either a structured module (n = 30) or without a module (n = 37). The results revealed significantly better performance in word/phrase accent accuracy (t (65) = 4.36, p < .001), and intonation (t (65) = 3.94, p < .001) in the group using the structured module compared to the unstructured group. Additionally, feedback collected via questionnaires indicated that students using the module reported more positive experiences, highlighting increased usability, perceived effectiveness, and confidence in their language skills. These findings suggest that the teacher’s role in integrating multimedia resources such as YouGlish is critical to optimizing its effectiveness in language learning.