Has anyone here heard a version with an extra beat at the beginning?

I have one I recorded from the internet way back in 2001 when it was first put out on Napster. At the beginning of the song, after the first series of descending notes play, and then it goes "Bam!" and then goes into the groove of the song; this version basically has two "Bam"s, the second one repeated right after the first. Other than that it's identical to the single mix.

I am wondering if this is a third mix of the song.