I buy most of my music from Amazon increasingly MP3s and when buying CDs exploit auto-rip where possible. However that still leaves me with piles of CDs bought direct from artists and large boxed sets. So rip them to my computer and drag over to Amazon Music and upload - really easy you would think. Except, all too often one or two tracks from a CD will be rejected by Amazon. Error messages are "corrupt file" or "invalid format" despite the tracks seemingly being the same as all the others ripped at the same time. The supposedly "corrupt" files play, so surely are not corrupt; the "invalid format" files are MP3, same as those that successfully upload.
Any suggestions? It's deeply irritating to have partial albums in the cloud.