How do you install airplay on ipodtouch?

AirPlay is built into iPod Touch devices that run iOS 4.2 or later, so there’s no need to install anything. To use AirPlay, ensure your iPod Touch is connected to the same Wi-Fi network as your AirPlay-compatible device (like an Apple TV). Then, swipe down from the upper-right corner (or up from the bottom on older models) to access Control Center, tap on the “Screen Mirroring” or AirPlay icon, and select your desired device. Follow the on-screen prompts to start streaming content.