I'm trying to sync a counter that keeps track of bars and beats of an ogg file that is started simultaneously. Unfortunately, there's a big evident drift after just 5-10 seconds.

I'm using oggread~ and simple metro constructs for this. Am I missing something? Is there a reliable way to display/deduce bars and beats from a linear playing audio file (compressed audio file, that is!)

Thanks to all, as always,

Filippo