Soundboard / Cart Wall

The soundboard (also called a Cart Wall) is a grid of pads, each pre-loaded with a short audio clip. Press a pad and it plays immediately — no loading delay.

[Screenshot: Desktop Cart Wall — named banks, colour-coded pads, keyboard shortcut labels, animated playing indicator]

How It Works

Each pad holds a reference to an audio clip. When you press a pad, br\u016bhi plays the clip from RAM — the file is pre-loaded when the bank is opened, so playback is instant.

The Cart Wall is divided into banks. Each bank is a named page of pads. You can have as many banks as you need; only the active bank’s pads are shown at one time.

Pad Capacity

Platform	Pads per bank	Banks
Desktop	16 pads	Unlimited named banks (128+ pads total)
Cloud	16 pads	4 named banks (64 pads total)

Per-Pad Settings

Each pad is individually configurable:

Setting	Options	Notes
Label	Any text	Displayed on the pad face
Audio source	File path (Desktop) or URL/S3 key (Cloud)
Colour	Any colour	For visual grouping (e.g., green = music beds, red = stings)
Loop	On/Off	Loops the clip until you press Stop or the pad again
Fade in	Duration (ms)	Ramps up at start
Fade out	Duration (ms)	Ramps down when stopped
Volume	0–100%	Per-pad level, independent of master

Tip

Use colour coding to organise your cart wall by type. A common scheme: green for music beds/loops, orange for jingles and station IDs, red for news stings, blue for effects.

Playing a Pad

• Click the pad to start it. The pad animates to show it is playing.
• Click the pad again (or click the inline stop button) to stop it.
• If the pad is not looping, it stops automatically when the clip ends.

Multiple pads can play simultaneously.

Keyboard Triggers

🖥️ Desktop

Pads in the Desktop app can be triggered by keyboard:

• Keys 1–9 trigger pads 1–9 in the current bank.
• F1–F12 trigger pads 1–12 directly.

Assign keyboard shortcuts to individual pads in the pad’s settings modal.

MIDI Triggers

🖥️ Desktop only

Any pad can be triggered by a MIDI note. In the MIDI Mapping table (System → MIDI), add a mapping with the target set to pad:<bank>:<pad_number>. Or use MIDI Learn: open the MIDI Mapping screen, click Learn, then press the pad in the Cart Wall and press the desired MIDI note on your controller.

Loading Audio into Pads

🖥️ Desktop

Two ways to load audio:

1. Import from library — Select any track from your media library and assign it to a pad.
2. Record from deck — Record a clip directly from the current deck output into a pad. Useful for capturing a live drop or a caller’s phrase.

☁️ Cloud

In the Cloud dashboard, each pad is configured with a URL (local server path or S3 presigned URL). Upload files through the Content Library and then assign them to pads in the soundboard editor.

Pad configurations are stored per-station in /tmp/soundboard/{station_id}/manifest.json inside the container.

Persistence

Pad assignments and bank layouts are saved automatically:

• Desktop: Stored in the cart_banks and cart_pads tables in the br\u016bhi SQLite database.
• Cloud: Stored in the station’s JSON manifest file, persisted in a Docker volume.

Pads and bank layouts survive app restarts.