Comment 3 for bug 1198306

Yes, exactly this is the issue. Maybe repeat it the wrong word here. When an underflow happens I think the sound card plays the samples that are in the its ring buffer from the last call. The intended samples are just shifted to the next round.
This late delivery leads to a notable speed change of the track.

A solution for this bug will drop the samples outdated samples and continues with the right samples as if there was not underflow.
We need a micro seek for all decks or something.