In addition to publishing your score on MuseScore.com, you can share the MP3 audio generated by MuseScore to Audio.com, a free service from Muse Group. On Audio.com, you can share your tracks publicly, make them available to download, and upload unlisted audio.
MuseScore 4.1 and above
Open the Publish tab
Click the Share on Audio.com… button in the toolbar
If you’re not already signed in to an audio.com account, you will be prompted to do so or create an account
Enter a title, choose whether the score should be Public or Unlisted, then click Share
If you've already shared audio from the score, you can replace the existing audio or upload it as a new audio file\
Audio.com will open in your browser to upload the track
From here, you can set the title, URL, category, tags, description, sharing permissions, and downloading permissions of your track
MuseScore 4.2 and above
The first time you publish a score, you will be prompted to share on Audio.com. You can choose to be prompted every time you publish, and this can be controlled in Preferences.
Open Preferences
Go to the Save & publish tab
Check on Always prompt to share on Audio.com after publishing to MuseScore.com