This problem is now solved! Hello, Recently my Windows 7 machine has decided that it will only play audio from Windows (bongs etc), WinAMP and Skype - That's it, nothing else. I get no audio from FireFox, while playing Minecraft or Grand Theft Auto IV. Below is some screenshots of various sound management area's and explanations of various things in the image: This image shows the two volume controls I get after clicking the volume control icon on the notification tray. The left slider is titled "Digital Output (4- USB Multi-Channel Audio Device)" and the right slider is titled "Speakers (Realtek High Definition Audio)". This image shows that "Realtek High Definition Audio" is not actually running. The fourth icon is the driver software used with the USB sounds card I am using. This image shows the driver software used with the USB sounds card I am using. This image shows the volume mixer for the first slider. The left icon is titled "Digital Output (4- USB Multi-Channel Audio Device)". This image shows the volume mixer for the second slider. This image shows the contents of the drop down list in the first volume mixer. The second volume mixer has the same drop down menu. Edit 1: I am now seeing this volume mixer. * Denotes a bong noise being played when the slider is clicked on. If you require more information please let me know and I will get back to you as soon as I can. Thanks for reading, ~ Matt.