how to remove idt audio settings icon from system tray

Try to disable the Indexing Service: Disable Indexing Service.
Answered Apr, 26 2011

The best way to disable Intel Graphics system tray icon is to right-click on system tray icon and select exit system tray option.

see more : http://www.intowindows.com/how-to-remove-intel-graphics-icon-from-windows-7-system-tray/ Answered Apr, 14 2011

For versions of Vista without the Offline Files plugin (Home Basic or Home Premium), Sync Center can be disabled via the registry as follows.
1 Go to Start/Run and type ‘regedit’. Hit the Enter key or click OK.
2 In the left hand registry editor window (the tree view) go to the following registry address…
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SyncMgr\Handlers
In there you should see a branch called…
{08b0b2d5-3fb3-11d3-a4de-00c04f610189}
3 Right-click on the branch and select Delete from the context menu.
4 Look in your system tray. The icon should be gone.

The source:http://www.windowsreference.com/windows-vista/how-to-remove-sync-center-icon-from-system-tray-in-vista/ Answered Aug, 09 2011