MP3 versus uncompressed music
Andreas in Can I hear a difference between MP3s and uncompressed audio?:
But modern MP3 encoders are much better than those from the past, and at a bitrate of 320kbit/s they deliver audio quality that in my opinion very few people will be able to tell apart from the uncompressed original.
Super interesting and well made post from Andreas, complete with samples where you can test for yourself. My hearing's so poor I couldn't even discern the artefact in the sample used to showcase what an artefact sounds like! I really need to enable to transcoding on my music server to save space and bandwidth.