In order to fix the issue, launch the program, open the Digital TV interface and from the Tools menu press the Audio button next to Mute. If you're watching cable/antenna TV on TiVme right-click anywhere and you will open the Tool Menu. After that, select the Mute Off or Volume Up icon. For further information go to Start > All Programs > KWorld Multimedia > Manual and open the English version. If you still have issues, update the software to the latest version.