BOSTON--(BUSINESS WIRE)--lt;a href="https://twitter.com/hashtag/a11y?src=hash" target="_blank"gt;#a11ylt;/agt;--3Play Media, the leading provider of high-quality, fast-turnaround video accessibility services at scale, announced today that it has received a significant investment from Riverside Partners, a Boston-based private equity firm. 3Play Media provides premium video captioning, transcription, subtitling, and audio description services to more than 2,500 customers across multiple industries. 3Play Media’s technology solutions employ an innovative approach that combines huma.