Sound and media Basic sound Change the sound volume — Set the sound volume for the computer and control the loudness of each application. Choose or disable the alert sound — Choose the sound to play for messages, set the alert volume, or disable alert sounds. Sound problems — Troubleshoot problems like having no sound or having poor sound quality. Use a different microphone — Use an analog or USB microphone and select a default input device. Use different speakers or headphones — Connect speakers or headphones and select a default audio output device. Daha Çok Bilgi User & system settings — From hardware control to privacy settings, make GNOME work for you. Music, video & devices I can’t play the songs I bought from an online music store — Support for that file format might not be installed or the songs could be “copy protected”. Media card reader problems — Troubleshoot media card readers. Open applications for devices or discs — Automatically run applications for CDs and DVDs, cameras, audio players, and other devices and media. Other people can’t play the videos I made — Check that they have the right video codecs installed. Why won’t DVDs play? — You might not have the right codecs installed, or the DVD might be the wrong region. Daha Çok Bilgi GNOME Yardım — A guide for GNOME desktop users.