Player
What files can be uploaded to the player?
You can upload audio files to play through the audio player in the following formats: MP3, MPEG, OGG, WAV, M4A, AAC.Few readersI can't upload an audio file to the player.
The issue might be that you are trying to upload an unsupported file type.
The list of supported audio formats is: MP3, MPEG, OGG, WAV, M4A, AAC.
The issue could also be related to internet connection speed, which may cause the file to upload slowly for either you or the student.
You can check your connection speed at speedtest.net.
The recommended speed for stable app performance is upload/download of at least 25 Mbps and a **ping no higher than 100Few readersThe audio file is taking a long time to load for the student.
The issue might be related to your internet speed or your student's internet speed.
You and the student can check internet connection speed at speedtest.net.
The recommended speed for stable app performance is upload/download of at least 25 Mbps and a ping no higher than 100 ms.Few readersI can't hear the student in sync with the player.
Please make sure the "Student" mode is enabled. If the issue persists, ask your student to recalibrate their microphone by following the video guide. This should allow you to hear the student in sync with the player.Few readersI can't hear the player.
If you are in a virtual classroom without a student and the "Student" mode is enabled, the audio file will not play.
Please wait for the student to join for this feature to work correctly, or switch to "Teacher" mode.Few readersThe player volume is too low.
If the audio track from the player is not loud enough, please check the volume settings within the MOOZ app.
Solution:
During a lesson, locate the audio player panel.
Below the playback controls, you will see a volume bar.
Move the slider to the right to increase the audio track volume to a comfortable level.
Important: This setting adjusts the volume of the audio player only on your side**,** the student also needs to adjust the volume on their side.
If the audio trackFew readersI can't see the player.
Hover your mouse over the top-right corner of the audio player panel.
Look for and click the double-arrow icon. This icon controls the panel's size.
After this action, all player elements — including the audio track, playback controls, volume, pitch, and tempo sliders — will become visible.Few readers
Virtual Piano & MIDI Keyboard
How to connect a MIDI keyboard?
You can connect a MIDI keyboard directly via USB of your desktop device. The main step is to install the necessary drivers for that keyboard on your device.
A MIDI keyboard can also be connected through an audio interface.
To test if the keyboard connection is working properly, you can use the website: https://hardwaretester.com/midi.
If the keyboard does not function correctly on the site, there might be a connection issue with your device, such as missFew readersI can't hear the student in sync with the virtual piano when they are playing.
Ask your student to recalibrate their microphone by following the video guide. This should allow you to hear the student in sync with their playing on the virtual piano.Few readersCan I accompany the student?
Unfortunately, real-time accompaniment is not possible due to internet latency. Instead, use audio files with vocal/music exercises. You can upload them to the audio player and hear the student in sync with the audio file.Few readersI can hear my MIDI playing with a delay.
It is necessary to install the latest up-to-date drivers for your MIDI keyboard and check the functionality of the keyboard connection via the website: https://hardwaretester.com/midi. If it does not work correctly on the site, there is likely a problem with its connection to your device.Few readersCan I upload my own samples for the virtual piano?
You can use your own samples via a microphone, without connecting a MIDI keyboard directly in MOOZ.
Unfortunately, it is not possible to upload your own samples for the virtual piano. However, you can use the available sound types in the app: grand piano, electric, strings, and organ.Few readersWhy can't the student see the virtual piano?
The virtual piano is only available in the desktop and tablet versions. Please recommend that the student use a computer or tablet for full access to all features.
If your student is already connected via computer/tablet, they need to expand the virtual piano interface. To do this:
Hover your mouse over the top-right corner of the virtual piano panel.
Look for and click the double-arrow icon. This icon controls the panel's size.
After this action, all player elements — will become visibFew readersCan I connect an acoustic piano?
It is not possible to connect an acoustic piano to your device, as it lacks the technical capability for such a connection. However, if you have a digital piano that supports this feature, it can be connected to your computer and used within the app.Few readersCan I connect other MIDI instruments?
Currently, connecting other MIDI instruments is not available. However, we plan to add this feature in the future. We would love to hear your suggestions, so please send them to our technical support chat for consideration. Don't forget to follow our updates!Few readersCan I connect a MIDI keyboard to a phone or tablet?
Connecting a MIDI keyboard is only supported in the desktop (computer) version of the MOOZ app. To use a MIDI keyboard during lessons, please use a personal computer or laptop. This will also provide access to MOOZ's other professional tools.Few readersWhy can't the student see which keys I'm pressing?
If the student cannot see the highlighted keys on the virtual piano:
On the Piano panel, find and click the "Settings" button.
In the menu that opens, locate the "Show pressed keys" option.
Make sure the switch next to it is active (lit green).
If the switch was off, turn it on.
After this, the student will be able to see which keys you are pressing.
Also note:
The key highlighting feature is only available in the desktop and tablet versions of the app. If tFew readersI can't see the virtual piano.
Hover your mouse over the top-right corner of the virtual piano panel.
Look for and click the double-arrow icon. This icon controls the panel's size.
After this action, all player elements — will become visible.Few readersThe virtual piano volume is too low.
If the audio track from the virtual piano is not loud enough, please check the volume settings within the MOOZ app.
Solution:
During a lesson, locate the virtual piano panel.
Below the virtual piano controls, you will see a volume bar.
Move the slider to the right to increase the virtual piano volume to a comfortable level.
Important: This setting adjusts the volume of the virtual piano only on your side**,** the student also needs to adjust the volume on their side.
IfFew readers
File Sharing + Annotation
Screen Sharing
How to share screen with sound?
When selecting a screen to share, activate the "Share sound" toggle.
If the toggle is enabled but there is no sound, follow these steps:
Check your selection: Ensure you have selected the correct window/tab/monitor to share.
Verify system settings: Confirm that your system's sound settings allow screen recording.
Update the app: Update the MOOZ app to the latest version.
If these steps did not help, please contact MOOZ technical support via chat.Few readersThe student's audio cuts out during screen sharing with sound.
This is expected system behavior, related to how screen sharing with sound operates.
How it works:
When sharing the screen with sound, MOOZ transmits the audio stream from your computer.
When the teacher or student starts speaking, the system automatically lowers the volume of the shared audio.
This is done to ensure the speaker's voice is heard clearly without background interference.
This is not a technical malfunction, but a deliberate mechanism to ensure high-quality sound dFew readersScreen sharing is laggy
This issue is usually related to insufficient internet connection speed or high device load.
Solution:
Check your internet speed:
Recommended speed: at least 25 Mbps for both upload and download and the ping should be below 100.
Check at speedtest.net.
Optimize your connection:
Use a wired connection (Ethernet) instead of Wi-Fi.
Close unnecessary applications and browser tabs.
Disable your VPN if you are uFew readersThe student cannot see the screen share.
If, after starting a screen share, the student cannot see the content, follow these steps:
Solution:
1. Check your screen selection:
Make sure the correct screen/monitor is selected (if using multiple monitors).
To share a specific application, select the exact program window.
To share a browser tab, select the browser with the tab name visible.
2. Check system settings:
On macOS: Go to System Preferences → Security & Privacy → Screen Recording.
On Windows:Few readers
Lesson Recording
Where is the lesson recording saved?
To save a lesson recording, you must stop the recording before exiting the application, choose a save path for the file, and wait for it to fully save. Otherwise, the file will be lost.
If you did manage to save the recording:
Check the standard folders:
Windows: C:\Users\[Your_Name]\Videos\ or C:\Users\[Your_Name]\Downloads\
Mac: /Users/[Your_Name]/Movies/ or /Users/[Your_Name]/Downloads/
Use your computer's search:
Open **Windows Search (Win +Few readersCan a student record the lesson?
Student can record the lesson if they are connected from a computer. When the student selects the lesson recording option, a notification will appear on the teacher's side, and the teacher must grant permission to start the recording.Few readersCan I record a lesson on my phone?
The lesson recording feature is available only in the desktop version of the MOOZ application for computers (Windows, macOS).
To record your lessons, you must use a computer or laptop.
Why this is important:
Recording a lesson requires significant system resources for real-time video and audio processing, which ensures stable operation and high recording quality. Mobile operating systems have technical limitations that prevent the implementation of this feature with the required quality.Few readersOn the lesson recording, the audio is out of sync with the video.
It is necessary to check the recording in a different video player, as the codecs of your current player may not allow for correct playback.Few readersThe lesson recording button is not clickable.
If the lesson recording button does not respond when clicked, perform the following steps:
Solution:
Clear the application cache:
Close MOOZ.
Delete the cache folder:
Windows: C:/Users/[your_username]/AppData/Roaming/MOOZ
Mac: /Users/[your_username]/Library/Application Support/MOOZ
Restart the application.
Reinstall the application:
Completely uninstall MOOZ from your device.
Download the latest version from the official websFew readersThe lesson recording is taking a long time to save.
The prolonged saving time is related to the video conversion process, which depends on your computer's performance.
Solution:
Close all background applications:
Browsers with multiple tabs
Video/audio editors
Games and resource-intensive programs
Background downloads
Check system requirements:
Minimum: 2-core processor from 2 GHz, 8 GB RAM, Windows 10/macOS 11.0+
Recommended: 4-core processor from 2 GHz, 8+ GB RAM, SSD storage
EnsureFew readersIn what format/resolution is the lesson recorded?
The lesson is recorded in MP4 format with a choice of quality settings:
Available resolution options:
HD (1280×720) – the optimal balance of quality and file size.
Full HD (1920×1080) – the best quality for detailed lessons.Few readersIs it possible to set up automatic recording for every lesson?
You must start the recording for each lesson manually. At the beginning of the session, click the "Start Recording" button.
Don't forget to stop the recording and save the file after the lesson ends.
Why this is important:
This approach gives you full control over the recording process and helps prevent accidental saving of confidential material or filling up your disk space with unnecessary recordings.Few readers