Please edit the security policy file (default.config, admin.config and guest.config).
The security policy file (default.config, admin.config and guest.config) can be found in the /CuteEditor/Configuration/Security folder.
<configuration>
........
<securityname="MediaFilters">
<item>.avi</item>
<item>.mpg</item>
<item>.mpeg</item>
<item>.mp3</item>
</security>
........</configuration>
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