This ETS research memorandum documents the research and development work to build the graphical-user interface for the Listening Communications Skills Assessment for the Association of American Medical Colleges (AAMC). This new construct consists of vignettes that are in video format and delivered by computer. Usability studies were conducted to inform the interface design, establish the timing parameters, as well as type, functionality, and location of navigation tools, the Help button, volume control, replay function, and time display. The resulting interface has been approved by the AAMC for this new assessment. Recommendations for future work specific to the new assessment also are in this report.