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Stemly FAQ
Which audio interfaces are supported?
Stemly works with all class-compliant USB audio interfaces — no drivers needed. Popular choices: Focusrite Scarlett, MOTU M series, Behringer UMC, Roland series. Connect via USB-C or Lightning (with Apple adapter).
How do I import backing tracks?
Open Song Builder → tap + to create a new song → import WAV or AIFF files from the Files app (iCloud Drive, Dropbox, etc.). Assign each track to its audio output channel, set the name and save.
How does the Wi-Fi lyrics server work?
Stemly has a built-in Wi-Fi server. Tap Lyrics → Start Server. Band members open a browser on any device — iOS, Android, Mac, Windows — and enter the IP address shown on screen. Lyrics switch automatically as you navigate songs.
Why does STOP require 3 taps?
It’s intentional — a safety feature for live performance. Accidental stops on stage are the most common and embarrassing mistake. The button changes colour with each tap: STOP → STOP? → STOP?! — so you always know where you are. The threshold is adjustable in Settings.
How do I connect GoRemote?
Install GoRemote on any iPhone or iPad. Launch Stemly first on the host device, then GoRemote on the remote device — connection is automatic via Wi-Fi (MultipeerConnectivity), no pairing codes needed. A green dot in the top bar confirms the connection. If the connection drops, GoRemote retries every 2 seconds automatically.

Every device combination works: iPad host + iPhone remote, iPhone host + iPad remote, iPad + iPad, iPhone + iPhone. One host supports one GoRemote at a time.

Both devices can be in Airplane Mode — GoRemote then connects via Bluetooth, which is not blocked by Airplane Mode.

Recommended stage setup: Use a USB hub with a PD port (Power Delivery) and a USB-A port on the host. PD → charger; USB-A → audio interface or digital mixer. For older Apple devices: Apple Lightning OTG Camera Adapter.
How does song queuing work in GoRemote?
When the host is NOW PLAYING, tapping a song in GoRemote does not interrupt playback — it queues it (yellow highlight). Tap the trash icon 🗑 next to a queued song to remove it from the queue.

When the host stops, GoRemote automatically loads the queued song. Press PLAY twice to start.
GoRemote disconnects when the screen locks — how to fix?
MultipeerConnectivity does not work when the device screen is locked. On the GoRemote device set:

Settings → Display & Brightness → Auto-Lock → Never

Also enable Background Audio in Stemly settings on the host — this keeps playback running even if the host screen turns off.
Can I use Stemly on iPhone?
Yes — one purchase covers both iPad and iPhone. On iPhone you get up to 6 tracks, full mixer, lyrics and playback. Song Builder and Playlist Builder are iPad only.
What audio file formats are supported?
Audio files: WAV and AIFF are recommended. MP3 is also supported — useful on storage-limited devices such as iPhone 64 GB. For professional live use, WAV 44.1 kHz or 48 kHz, 16-bit or 24-bit gives the best results.
Lyrics files: RTF, TXT and PDF are all supported. RTF gives the most formatting control.
Where should I store my audio files and lyrics to avoid losing them?
Never store files inside the Stemly app folder. The folder Files → On My iPad → Stemly belongs to the app and is permanently deleted when you uninstall Stemly.

Create your own folder outside the app — for example “Stemly Copyrdquo; — directly in On My iPad or in iCloud Drive. Keep three things there:
• Audio stems (WAV / AIFF / MP3)
• Database backup — JSON file exported from Settings
• Lyrics text files (RTF / TXT)

This folder is yours and survives app updates, reinstalls and full device restores.
Do stereo audio files get split automatically?
Yes. Stemly automatically splits every stereo file into a left channel (L) and a right channel (R). Each channel is sent to its own USB output line — no manual splitting needed. You can also unlink a stereo fader pair in the mixer to control L and R independently during the show.
Can I display lyrics on Android or Windows devices?
Yes — any device with a browser (Android, Windows, Mac) can receive lyrics. However, all devices must be on the same local Wi-Fi network.

Best solution: Bring your own portable router — no internet connection needed, local only. Do not rely on venue Wi-Fi: it is often unreliable or has device isolation enabled.

iOS devices only? No extra router needed — Apple devices connect directly and work even in Airplane Mode.
How do I connect Android or Windows to the lyrics server quickly?
Use the built-in QR code button. In the Lyrics tab, next to the server IP address, tap the QR button — a large QR code appears on a black screen. The musician points their Android camera at it and the browser opens automatically at the correct address. No typing needed.

If the host device changes (e.g. iPad ↔ iPhone), simply scan the QR code from the new host and the connection updates instantly.
Lyrics stopped updating on Android / Windows — what happened?
The most common cause is the host device screen turning off. When the iPad or iPhone running Stemly — Lyrics goes to sleep, the Wi-Fi server pauses and all receiving devices stop updating.

Prevention: Before every show, set Settings → Display & Brightness → Auto-Lock → Never on the host device.

Quick fix: Wake the host device (make sure Stemly is on screen), then refresh the browser on Android / Windows / Mac — synchronisation resumes immediately.
The song title is shown in red in the Lyrics tab — what does it mean?
A red title means the song title does not match the name of its lyrics text file on disk. The app cannot synchronise lyrics for that song.

How to fix: Check that the song title (entered in Song Builder) and the lyrics file name on disk are exactly the same. Only when they match will lyrics load and switch automatically with the setlist.
💡 Tip: Before contacting support, check the User Manual — most questions are answered there with screenshots and step-by-step instructions.