160kbps ogg is not exactly low quality. Most people can’t tell the difference between 160kbps ogg and lossless, nor do they have the equipment when listen to. And with huge amount of data like this, it might be impossible or too expensive or too time consuming for them to archive in lossless quality.
I agree, archiving audio files should be lossless when possible, but that is not a requirement. 160kbps ogg is “good enough”.












You just say it should not, but why? As said 160kbp ogg is for most people not distinguishable from uncompressed. I think it is worth archiving this, especially if it is in mass like this. Why do you stay away from VBR?