6. Mixing, saving and export

Mixing a track

Each row in the track list has:

• M — mute (silence just this track).
• S — solo (silence every other track).
• A volume slider — the track's overall level, 0 to 150%.
• An fx badge showing how many effects are on the track's chain (chapter 5).

There is no separate mixer view yet — mute, solo, volume and the effect chain, together, are today's mixing surface.

Undo, always

Every edit in Nebula — adding a track, drawing a step, turning a knob, dropping a sample, an effect's own preset, a script's change over the Control API — is one step in a single undo history. Ctrl+Z undoes, Ctrl+Y (or Ctrl+Shift+Z) redoes. There is no "are you sure?" dialog for destructive-sounding actions, because undo already covers them.

Exporting to a file

The Export button in the top-right of the transport bar renders the whole project to a WAV file using the current default settings, immediately — no dialog. Its ▾ menu (also reachable from File > Export) offers:

• Default — one file, in the default format.
• Bulk — one file for every format/quality variant ticked in Settings > Export, rendered one after another; a small "Exporting n/m…" counter in the top bar tracks progress while it runs in the background.
• Custom… — opens the Export settings page so you can pick exactly what to render, once.

Rendering does not block the window — you can keep working while a file (or a bulk batch) renders. Files land in Documents/Nebula/Exports/; File > Open exports folder opens it directly.

The Export settings page

Options > Settings > Export chooses:

• The default format (WAV today; more formats are planned).
• The bit depth: 16-bit, 24-bit, or 32-bit float.
• The sample rate: 44.1, 48 or 96 kHz.
• The checklist of variants a Bulk export writes (so a bulk export can, say, write both a 16-bit "quick preview" and a 24-bit "final" file in one click).

Saving the project itself

Exporting writes audio; saving writes the project — the tracks, clips, notes, instruments, effects and their settings — so you can open it again and keep editing. Ctrl+S saves (asking for a name the first time); File > Save As keeps the current file untouched and starts a new one from where you are. Projects are .nebproj files in Documents/Nebula/Projects/ by default; File > Open and File > Open projects folder both work from there.

The PROJECT panel shows a small dot next to the project name whenever there are changes that have not been saved yet.