You quoted me and replied to me specifically, saying "You should uncheck "joint stereo" when you encode". which, as I described, was something of a strawman. Even if you now claim it to be a general statement it is still not a good argument (even if accompanied by a piece of bossy hubris). Stereo image in a lossy file does not depend only on where the encoder selects joint/mid side/intensity, so your "advice" is simply wrong in any case. The differences between lossless and well encoded lossy can be subtle. You might find small differences in the amount of bass or treble, or in the decay of notes, or in the definition of transients etc. etc. etc. These are not gross artefacts and may pass completely unnoticed in normal listening, and might even be difficult in a side by side comparison. But they can exist and do. If you've only been listening out for gross artefacts then your listening tests are flawed. That's an appeal to what? Your purchasing prowess? Are you going to publish your address and pay my transatlantic air ticket? I prefer business or first class by the way. This is all so much hot air. All of that is very convenient but that's all it is: convenience. If convenience is king than just be happy with that. Why bother trying to also claim that you "KNOW" that the lossy audio files are as good as the uncompressed originals? You cannot know that, you can only believe it. All you can reasonably claim is that you don't notice a difference. It doesn't matter if you attempt to upbraid Rem1x for some supposed lack of effort, or try to issue me orders like you're my commanding officer. Because your logic is flawed, and that is actually what matters (not your super hifi or the size of your library or how long you've been collecting it). Rem1x is right in saying I agree and like Rem1x I can claim with absolute reason and without any room for doubt or error that I hear my music at the best quality possible on the playback equipment I own. No ifs, no buts, maybes, additional claims or special pleading required. Another problem with asserting beliefs as facts is that if the day comes where the claim is found to be less than golden, it's much easier to deal with if one doesn't feel personally invested in the matter. Ask a naked emperor.