DJ Studio

Open a deck’s input panel, choose a device or computer/tab audio, set the buffer and connect. Allow capture in your browser, check the waveform, then press Play on the deck. Inputs connect paused.

Send Spotify to a virtual cable, then choose that cable as the deck’s audio input. For VB-CABLE: Spotify output → CABLE Input; DJ input → CABLE Output. Keep your browser output on your speakers or headphones.

Install the cable on your computer first. In Windows Settings → System → Sound → Volume mixer, set Spotify’s output. In the deck’s input panel, choose Audio device / virtual cable → Find audio inputs → CABLE Output.

Turn off Windows “Listen to this device” and direct monitoring of the captured input. If music plays with both decks paused, another path is playing the original. Keep the browser’s output separate from the captured audio; capturing the full speaker mix can feed the DJ output back into itself.

Computer / tab audio needs an audio-enabled selection in the browser picker. A dedicated interface loopback also works when it excludes the DJ output. Physical routing needs a spare line output connected to a line input, with speakers on a separate output.

The buffer setting controls storage, not a required wait. Press Play as soon as audio arrives; only a small processing reserve (about 60 ms) is needed. Leave the deck paused if you want more audio buffered first. Pause holds the playback position while new audio accumulates. Your chosen length is 100%; audio can accumulate beyond your chosen length, with up to one extra minute of history. Yellow warns below 60% or above 140%; red warns below 30% or above 170%. At the retention limit, capture stops to preserve it; resume to play it out, then disconnect and reconnect for fresh audio. A setting of zero uses a 30-second working reserve (60-second capacity). Larger buffers use more browser memory. Faster tempo drains the buffer; slower tempo fills it. The deck shows the remaining buffer and returns to normal speed at its limits. Key lock preserves pitch but stretching can introduce artifacts. Apply buffer clears the previous audio and pauses the deck; you can press Play again immediately.

Drag, tap or use the arrow keys to move through retained audio once the buffer is ready. You can also click or tap the live waveform to jump to that point. Left is older audio; right is newer audio. The colored section of the bar is audio still to play. Seeking keeps the deck playing or paused and stays within the retained buffer. The readout shows remaining time in HH:MM:SS and fullness relative to the chosen working length. Retention adds up to one minute, so long buffers stop capturing closer to 100% than short buffers do. After capture stops, you can still seek back and replay retained audio.

Capture and mixing stay in this browser. Nothing uploads unless you explicitly save a recorded set. Screen images are never displayed or recorded. Live input supports tempo, Key lock, EQ, filters and mixing; nudge, Sync and separate-output PFL work too. Enter or tap the source BPM for Sync; Set downbeat marks the live beat reference. Live PFL plays a separate headphone preview even while the deck is paused, without moving its held position or entering the master recording. When the deck plays, PFL follows it. File cues and loops remain unavailable.