As a team owner you can configure in your Team Management whether your members can send and receive files. This implies all kind of files: audio messages, videos, images, files like PDFs etc.
By default your team is allowed to share and receive all those file types.
To enable restrictions:
- Go to teams.wire.com and log in with your account credentials.
- Click Customization.
- Go to Feature Configurations / File Sharing section.
- Click Configure.
- Switch the toggle to Not Allowed and click Confirm.