Questions about how to remove vocals from music tracks is one of the most common questions we see in Looptalk (...after 'When is the next version of FL Studio coming out!', 'how do I record from a microphone' and 'do you like my hair'). With inspiration from nucleon (thanks nuc) we bring you the tutorial you have been waiting for...
Routing summary: This project has an Audio Clip (that is the original music track) routed to Mixer Track 1. Track 1's Master send is deselected. Track 1 is then routed in parallel to Track 2 (Vocal Kill) and Track 3 (Bypass).
Registered FL Studio owners can download the project used in this tutorial from Looptalk here: Gimme the project!
NOTE: All vocal removal techniques do bad things to the original backing track and this one is no exception. Generally, if you are serious about obtaining a song without the vocals it's probably better to re-make it from scratch yourself. The phase cancellation process messes with the sound in some not-so nice ways.