Getting Started

Install and open Prossible

Download from the Mac App Store. On first launch, grant Local Network access when prompted — LAN View depends on it.

Meet the two windows

Prossible opens Prossible — Control Panel (your operator surface) and Prossible — Stage Display (the screen the band sees). If you don't need the stage window, turn off Open Stage Display at launch in Settings — ⌘⇧D reopens it any time.

STAGE DISPLAY (LEFT) · CONTROL PANEL (RIGHT)

Open your session in Pro Tools

Open the show session — the one with your song and section markers — in Pro Tools on this same Mac. Prossible builds its setlist straight from those markers; there is nothing to export and no second file to maintain.

Work through the next two sections

One-time setup is two short jobs: an IAC bus so Pro Tools can send MTC, and pointing Pro Tools at it. After that, connecting is a two-click routine at every soundcheck.

Open Audio MIDI Setup

Press ⌘Space, type Audio MIDI Setup, and hit Return. It ships with macOS.

Show the MIDI Studio

In the menu bar, choose Window → Show MIDI Studio. A grid of MIDI devices appears.

Bring the IAC Driver online

Double-click IAC Driver and check Device is online. The icon turns from greyed-out to active.

Confirm a bus exists

The default IAC Driver Bus 1 is all you need. If the ports list is empty, add one with the + button. A dedicated port named Prossible MTC also works if you prefer labeled routing.

Point the MTC Generator at the IAC bus

In Pro Tools, open Setup → Peripherals… → Synchronization. In the MTC Generator section, set Port to your IAC bus and check Enable.

Switch Prossible to the real source

In the Control Panel, set SOURCE to Real (PTSL+MTC). A MIDI Input dropdown appears next to it.

Pick the IAC port and reconnect

Choose the same IAC port (IAC Driver Bus 1 or your named port) in MIDI Input, then press Reconnect. Pro Tools must be running with the session open — PTSL connects to the live session, not a file.

Check the connection card

The status card should read Pro Tools: Connected and MTC: Normal, both green.

Resync the markers

Press RESYNC in the SESSION SYNC card. Prossible reads every memory location and builds the setlist — without moving the Pro Tools cursor, counter, or playhead. Resync again any time you edit markers.

If something doesn't light up

Pro Tools: Connected but MTC: Stale — recheck step 01: the MTC Generator's Port and Enable. No connection at all — make sure a session is open and Prossible runs on the same Mac as Pro Tools.

Song markers

NN.Song Name/BPM/KEY — a two-digit number, a period, the title, then optional BPM and key separated by slashes. 07.Ballad/96 and 12.Jam are both valid; empty slots are allowed, as in 12.Jam//Am.

Section markers

Start the name with > — >Verse 1, >Chorus 2. Sections drive the stage display's bar countdown and the "what's next" line.

SongEnd markers

A marker named SongEnd (case doesn't matter) marks the end of the song. Per song, the setlist row's right-hand toggle decides what happens there: ■ stop cleanly (default) or ↓ continue into the next song.

Everything else

Any other naming is not parsed — it shows up as an Unrecognized warning on the session sync card so you can spot typos. For talk breaks or notes between songs, use Add Note Below from the setlist's right-click menu instead of a marker.

Turn on the server

In Settings, open the LAN VIEW card and enable LAN view server. The server stops when the app quits, so switch it on as part of your show-day routine.

Read the card

The card shows the port, Bonjour status, a QR code, and the plain address. If the Mac isn't on any network you'll see No usable network address — join Wi-Fi or Ethernet first. On networks that block Bonjour, the QR and address still work.

Connect a phone

On a phone connected to the same network, scan the QR with Safari or Chrome. With Require PIN on (the default), the QR carries the PIN — scanning is enough. Typing the address by hand asks for the PIN once.

Keep it as a browser tab

Leave the page open in the browser rather than saving it to the home screen — some iOS versions don't keep the screen awake reliably from a home-screen icon.

Approve one controller (optional)

Viewers are read-only, but you can approve a single device — typically your own phone — for transport control. When it asks, a LAN Controller Request alert appears on the Mac; press Approve within 60 seconds. The phone then gets the same guarded PLAY / STOP / NEXT buttons as the Control Panel — same rules, same logging. One controller at a time; approving a new one demotes the old.

Manage access

The card lists connected devices — the controller wears a CONTROLLER badge, and Revoke works even mid-show. Regenerate PIN disconnects everyone at once. In SHOW mode the server toggle and PIN settings are locked so nothing gets switched off by accident.

Meet the prerequisites — all of them

Both Macs on the same network, both running the same Pro Tools session with identical markers, both with SOURCE = Real showing Pro Tools: Connected / MTC: Normal, and both with the LAN view server on — pairing and reconnection run over it. The backup follows its own Pro Tools; it never borrows the main's screen.

Show a pairing code on the main Mac

Settings → REDUNDANCY card → Pair Consoles… → Show Code. You get a one-time six-digit code, valid for five minutes.

Enter it on the backup Mac

Same card → Pair Consoles… → Enter Code — pick the main Mac from the list, type the six digits, press Pair. Both cards now show each other's name and CONNECTED, and role badges appear: ACTIVE on the main, STANDBY (linked) on the backup. If the roles land backwards, fix them with the PRIMARY / BACKUP segment.

Run the show from the ACTIVE console

Reorders, colors, skips, dimmer, and mode changes on the ACTIVE Mac appear on the standby within a second. On the standby, editing is locked — but its own PLAY / STOP / NEXT and RESYNC keep working, because its playback is its own.

Failover: promote by hand

If the main Mac dies, the backup's badge flips to STANDBY — LINK LOST within five seconds — music and stage display never stop, since it chases its own MTC. Press Promote to Active to unlock editing and take the lead. Promotion is always a human decision, never automatic.

Recovery is silent

When the old main comes back, it reconnects automatically and settles into STANDBY (linked) without a single popup, inheriting whatever changed while it was gone. If both consoles ever claim ACTIVE (both were promoted while split), a red SPLIT BRAIN badge appears on both — press Promote to Active once more on the console that should lead.

Leave it paired

Pairing survives reboots and re-finds the partner over Bonjour even if IP addresses change. Push State Now forces a full resync without touching playback; Unpair requires confirmation and is locked during SHOW mode.