I am using an older version of BIAB 2008.5 on a Windows 7 PC. I just do simple back ups chord arrangements for ukulele accompaniment. A couple of tracks I created suddenly started playing "doubled" and slightly out of sync. I don't know how else to describe it. From the count in through the entire song, the count in is not merely the 4 taps but now 8 taps, as I said the second just slightly out of sync with the first. Then the song continues like that. It is of course unusable. This has happened more than once. My work around has been to copy all the chords and paste them into a fresh song. But I'd like to know whats going on if anyone knows. It generally happens after I've entered quite a few chords and is therefore quite irritating. Thanks for any insight.