Since I keep reading questions about BPM Sync - I use the following setup:
Serato connected with a Pioneer DJM A9. I have connected the Wolfmix to the second laptop port with a normal USB cable and the Wolfmix USB-A port. This allows the mixer to send the BPM information it recognizes directly to the Wolfmix MK2 via Midi.
This is an often overlooked feature of midi mixers and the Wolfmix.
Should also work with all actual Pioneer Mixers with Midi like the S11 / V10 ...