Hi guys,
based on the nice audio demo design from hamsterworks (http://zedboard.org/content/playing-adau1761-audio-codec), we have extracted the audio interface part and improved it regarding compatibility to Vivado, interface, documentation and reusability. The outcome is an IP core, that should be easy to use for your own PL designs:
https://github.com/ems-kl/zedboard_audio
have fun!