LosslessSwitcher is a free, open-source app designed to address this issue. It runs in the menu bar and checks the sample rate of music being played, then adjusts the output device’s sample rate in the Audio MIDI Setup app.

An iPad style slide over window for your web apps. No more hassle of window switching. Unlike other similar apps, there is no limit on what can be placed on Slidepad. You can type any keywords, URLs like what you do in common browsers!