Troubleshooting Windows Bluetooth with your Windows computer.
Next, you need to ensure that the Ceres C3.5BT or Ceres C4.5BT is your primary sound output.
1. Open your Windows Control Panel
• Windows 7 and Windows Vista: Start > Control Panel > Hardware and Sound > Sound > Playback tab
• Windows XP: Start > Settings > Control Panel > Sounds and Audio Devices > Audio tab
2. Check to see that Ceres C3.5BT or Ceres C4.5BT is selected for sound output.
• Windows 7 and Windows Vista: Click “Set Default” and click OK.
• Windows XP: Click “Use only default devices” and click OK.