I'm having a problem with Groove (PC and Android versions). I've uploaded 5,000 mp3 files to my OneDrive "Music" folder and they are all there. Groove doesn't see them though UNTIL I click on one in the MUSIC folder and play it? Then it shows up in Groove. Obviously, I can click on 5,000 songs to get them to show up in the Groove app. Is this a known issue? I've tried deleting and recreating the Music folder and re-uploading all of the songs 2 or 3 times. I've tried the "sync your music" hyperlink in the Groove app. Nothing seems to work. Any ideas?