Lately i have taken quite strongly to foobar2000 as an exquisite audio playback experience, as it is highly customizable and of utmost quality, but feels quite approachable. Another example is fine-tuning my Desktop PC music playback experience. A recent subwoofer upgrade to a nicer one i snabbed at auction for super cheap is one example. I spend a good deal of time listening to music and occasionally take stabs at optimizing the experience.