I have copied over 1000 cds from a Melco music server to an Aurender music server (all FLAC). I have bought a cheap Windows laptop to manage the files. I have purchased PerfectTUNES, ran the programme and it picked up over 50 cds without artwork - they now have artwork. When I went back to the Aurender App there were still many CDs without artwork so “swept” the folder again. It picked up a further 12. However there are still loads of cds on the Aurender App without artwork. What am I doing wrong? A non-techie answer would be appreciated. Thanks