Live listening only — nothing you mix here is recorded, saved, or shared. Select a track on each deck, hit play on both, and use the crossfader in the middle to blend between them — or let Auto-Mix — in the banner right above the decks — do it: it starts the target deck playing if needed, matches its tempo to the other deck's and lines up their beat grids too if Auto-sync beat is checked, then eases the crossfader over to it by itself, over whatever Transition length you've set instead of a manual drag. Grabbing the crossfader by hand cancels a run in progress. Auto-chain: automatically triggers that same transition to the other deck the moment a track ends or hits its preview cap, as long as that deck has a track loaded — for continuous, hands-free mixing. Under More mix options (beta): Key match flags the Auto-Mix button when the two decks' keys don't mix well together (informational only, never changes the sound); Smart cue automatically re-cues the incoming deck to a quiet moment near its current cue point; Bass swap hands the bass off from the outgoing deck to the incoming one during the transition. Each track mixes for a short preview before that deck locks — pick another track to keep going, or follow the streaming link that appears below once you've hit the cap. Seek: click or drag anywhere on the progress bar under a deck to jump straight to the point you want your transition to start from. Filter: sweep left for low-pass, right for high-pass. Crush: bitcrush/distortion. Flanger & Delay: classic send effects, mixed in on top of the clean signal. Wobble: drag the little XY pad — right for a faster rate, up for more depth — for a filtered wah/dubstep-style wobble; Reset switches it off. Repeater: press and hold the pad — drag right for a longer slice, left for shorter, up/down to pitch it while it loops — release to snap back to where the track actually is. Scratch: drag the jog wheel left/right — it supports real reverse playback, like scratching a record. Gate: chops the signal on/off in time with the track. Sync: matches this deck's tempo to the other deck's (tempo only, not beat-aligned). Pause now brakes to a stop like a record, instead of cutting off instantly.