The early versions of Google Play Music earned a dubious reputation at launch for aggressively eating through cellular data in the name of providing the "highest quality" sound. After a few optimizations and an option to control audio quality on mobile connections, the situation got much better. However, being more responsible with cellular data alone wasn't very helpful to users with capped home Internet service or slow Wi-Fi. The latest update to the app aims to fix that with new settings to control audio quality when streaming over Wi-Fi or downloading music for offline playback.