JBL CREATURE II Computer Speakers "youtube playing double sound" Questions

Double click on the volume control icon in the system tray.Click on "options"--"Properties".Select Line-in and Mic.Mute them. I hope this solves your problem. i could play my music from my desktop but

...playing the disc, the problem is most likely with the digital cable that goes from the CD/DVD driver to the sound card (or to the motherboard). Are the speakers connected to the proper sound port / ...

...double head phone thing (about 3 inch long ,included) in to your computer and other end in the ipod dock slot ( with the musical note NOT the head phone slot) and plug speakers plug (black NOT green) ...

...playing but none comes out. On a high end sound card there are DEVICE,WINDOW SOUND,CD,WAV and MP3 individual settings. Right Click on the speaker icon (next to clock) and open mixer to max out ...