聲音與媒體 聲音基本設定 變更音量 — 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. 使用不同的喇叭或耳機 — Connect speakers or headphones and select a default audio output device. 使用不同的麥克風 — Use an analog or USB microphone and select a default input device. 更多資訊 使用者與系統設定 — 大至硬體控制、小至隱私設定,從裡到外量身訂做 GNOME。 音樂、影片與裝置 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. 其他人無法播放我所製作的視訊 — 確認他們已安裝正確的視訊解碼器。 為何 DVD 無法播放? — 您可能尚未安裝正確的解碼器,或是 DVD 不允許在您的區域播放。 更多資訊 GNOME 求助 — 提供給 GNOME 使用者的指南。