The Playthru Player is a potentially unwanted program that allows you to watch videos from various video services such as YouTube, Vimeo, DailyMotion, and Blinkx in an application outside of your browser. As this program is free, it derives its revenue by display advertisements on your computer.
Article Link: https://www.bleepingcomputer.com/virus-removal/remove-the-playthru-player-adware