Muse Sounds inactive

• Aug 12, 2023 - 18:52

OS: macOS 13.4, Arch.: x86_64, MuseScore version (64-bit): 4.1.1-232071203, revision: e4d1ddf

I have installed and uninstalled Muse Score 4 multiple times since the launch. Anytime I notice a new update I try again. I have installed at least 1 sound package every time. Muse Sounds always remain greyed out and inactive in the playback setup. How can this be resolved?


In reply to by adrianomcvvil1

I don't know anything about macOS, but basic troubleshooting steps could be:
-check Muse sampler: Diagnostics - Muse Sampler - Check Muse Sampler.
This should report: Muse Sampler library is detected, version XXX
If not present:
-check logfile. (no idea where this one is on mac; on linux ~/.local/share/MuseScore/MuseScore4/logs - on Windows C:\Users\username\AppData\Local\MuseScore\MuseScore4\logs)
In the log you will find:
-the location MS expects to find the library
-if it is found or not
-if the version is (in)compatible.
Troubleshooting anything begins with collecting info
If the library is present, but you still cannot select any muse sounds in the mixer, then probably the sounds cannot be found by the sampler. This is configured in a config file (Linux: /var/lib/MuseSampler/.config - again no idea where to find this in macOS)
I assume this works similar in macOS. Probably the search facility on your computer can help you find this stuff

In reply to by graffesmusic

Thank you for this suggestion. running this diagnostic gives many errors but I think the key ones are:
ERROR | main_thread | MuseSamplerLibHandler | MuseSamplerLibHandler: Unable to open MuseSampler library, path: /Users/***/Library/Application Support/MuseSampler/lib/libMuseSamplerCoreLib.dylib

ERROR | main_thread | MuseSamplerResolver | checkLibrary: Incompatible MuseSampler library; ignoring

When I went to find the file and see if I could get more info on the file I couldn't find it. It looks like it didn't download and install. There is also no path on my computer that matches the above.

In reply to by stevee22

Looks like musehub is not installed, since you cannot find the library anywhere on your system.
How do I get Muse Hub?

You can download Muse Hub from the top of this website. Click the icon that corresponds to your operating system (macOS, Windows or Linux). You can also download Muse Hub from partner websites such as, and

On macOS, after downloading the .DMG, drag the Hub icon onto the Applications folder, then launch it from there. You must run the Hub from your dedicated Applications folder for the most optimal experience.

In reply to by graffesmusic

Muse hub is installed, and was installed first, and has been removed and re-installed for every attempt. Musehub was used to install musescore every time. Musehub was used to download the muse sounds every time. Musehub was used to download audacity (that seems to have worked correctly) Musehub/macOS does ask me to enter my password every time I restart my computer.

In reply to by stevee22

Hi, Stevee22!

First of all, allow me to apologise in advance because I'm not a native English speaker and also because I'm not an advanced computer user, but I came across this thread while looking for a solution to that same issue (I'm a mac user myself) and I did find it.

I opened Finder and ran a search for "libMuseSamplerCoreLib.dylib". It was... somewhere, inside "". I then just copied the zip file and unzipped it in Macintosh HD > Aplicaciones > MuseScore 4 > Contents > Resources > Sound

The dylib file was now in the Sound folder and the MuseSounds option became available. And it works great!

Hope this helps!

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