It won't.

Neither Serato or Numark have announced any plans to enable it.

If it was possible they probably would have by now.

They will probably have it just as soon as they make a V7mk2.

V7's don't have the proper hardware to support 4 channels, nor will they......ever.

I think they can make i little piece of hardeware so you can play 4decks, something like the FX-bar what they made for the ns7.
Something you can plug and play.
Otherwise DJdecks can make it without hardware, Torq can do it to without hardware, so why serato can't make it?

They could (and do) make a version of the software which supports four decks.

The V7s still wouldn't have the capability to use them though.

There isn't enough demand for building such an interface, take a poll of actual V7 users and you'll find that the user base if fairly "low". It's not a Serato issue, its the controller itself, it simply doesn't have the hardware channels/support to deal with 4 channels of stereo data.....at least not without extreme modification to the hardware.

Personally, I rather have 4 separate V7's that do 4 separate tracks, than two V7's that do 4 tracks. Actually, I only need 3, so if they could pull that off, I would be happy.

Hey Nephew#1,

As phatbob has mentioned this isn't available and there are no plans to do this in the future sorry.

Cheers,

Sam.