Boston-based private equity firm Riverside Partners made a majority investment in 3Play Media, a premium video captioning, transcription and translation service. Financial terms were not disclosed. "We are thrilled to partner with Chris Antunes and Josh Miller as founders and leaders of the business in order to support the significant continued growth of the Company. We were attracted to 3Play due to its demonstrated track record of success, its high quality and discerning recurring customer base and its proprietary, scalable software platform. Our significant investment in 3Play marks not only our recognition of the Company's achievements to date but, as importantly, our belief in the continued future success," Michelle Noon, Riverside General Partner.