SYNCED AUDIO IS ALL MIXED UP! PLEASE HELP!

What in the bloody hell, man?? My clips linked as always but I open it up and months-worth of work is ruined due to audio clips randomly assigned to wrong video clips. I've attached the screenshot of my synced clips sequence-- WHAT HAPPENED?? They're all wrong and "lined" out. And on the main sequence, the audio is flatlined. I've deleted caches, restarted the program over and over, rendered audio-- nothing. How do I fix this?? Please help. This is INSANE.