Audio Sync has been failing repeatedly in Premiere Pro lately with the absurd "can't find a match" error message). I've tried deleting Media Cache, that doesn't work. I tried making every file .WAV in media encoder that doesn't work (even though it worked perfectly fine with MP3s before). The big proof is that it failed when one track has the vocals only and the other had music with the exact same vocals mixed in. I've synched scores of tracks just like this with a lot worse quality and it worked. Please fix this, it's a crucial feature for me.