Hello,

when I try to launch a song. There's an error window poping out and telling me (in french, so it might not be an exact translation, I apologize for that)
"impossible to read the file. The format is not supported."

I didn't played PPD for a couple of months, but I didn't have that problem before.
I checked my codec settings, ffdshow is my prefered decoder for H.264, AAC, etc

I don't know what's wrong.

Nevermind, I found out

You switched to LAV filters during an update. And I didn't used them. That's why it didn't worked