See what audio widgets this website is using

I am looking for a freelancer to help me identify the audio widgets being used on a website for curiosity and research purposes. I am in need of a detailed report with recommendations on how to improve the audio widgets. If there are significant improvements, I would like suggestions for better alternatives. The ideal candidate for this job should have experience in audio widget research, website performance analysis, and the ability to provide detailed recommendations. ATTACHED IS AN SCREENSHOT EXAMPLE OF THE AUDIO WIDGETS USED ON THE SITE.