Comment 2 for bug 1851985

There are also a bunch of bugs with the current code:

* quantize is broken if you try to start a beatmap track before the first beat, because the beatmap is not extrapolated beyond the beginning of the track, so mixxx can't do beat fraction calculation
* The sync to internal master is a little broken (some off-by-one-buffer errors), so the pitch of a non-const track is nudged around unnecessarily
* as stated above, syncing tracks with highly variable beatmaps is not great and produces a lot of warble.