The latest version of Rekordbox now supports DVS control (as an additional add on cost) so you can use vinyl or CD timecode control to manipulate your music. You can also download their timecode ‘control signal’ audio file here.
Also in the update is Multi-language track information support and DJM-T1 support (control only) as well as some improved stability and fixed other minor issues.
Check out the Rekordbox site for further info.