Index: Slim/Utils/OS/Win32.pm
===================================================================
--- Slim/Utils/OS/Win32.pm	(revision 30499)
+++ Slim/Utils/OS/Win32.pm	(working copy)
@@ -621,6 +621,27 @@
 		if ($@) {
 			Slim::Utils::Log->logError("Couldn't set priority to $priorityClassName ($^E) [$@]");
 		}
+    
+    # On Windows Vista and above, use VERY LOW I/O priority when CPU priority is LOW and NORMAL I/O priority for all other CPU priorities.
+    # Windows Task Scheduler uses LOW I/O priority with BELOW NORMAL CPU priority for tasks. Therefore, using VERY LOW I/O priority with to LOW CPU priority is reasonable.
+    # Setting I/O priority to LOW isn't possible using the published API, otherwise we could do this for when CPU priority is BELOW_NORMAL.
+    if ($class->{osDetails}->{'isWin6+'}) {
+          	if ($priorityClassName eq 'BELOW_NORMAL' || 'NORMAL' || 'ABOVE_NORMAL' || 'HIGH') {
+		    # Use hardcoded value since Win32::Process doesn't provide PROCESS_MODE_BACKGROUND_END
+		    eval { $setPriorityClass->Call($processHandle, 0x00200000) };
+		    if ($@) {
+			    Slim::Utils::Log->logError("Couldn't set I/O priority to NORMAL ($^E) [$@]");
+	    	}
+		  }
+		  if ($priorityClassName eq 'LOW') {
+		    # Use hardcoded value since Win32::Process doesn't provide PROCESS_MODE_BACKGROUND_BEGIN
+		    eval { $setPriorityClass->Call($processHandle, 0x00100000) };
+		    if ($@) {
+			    Slim::Utils::Log->logError("Couldn't set I/O priority to VERY LOW ($^E) [$@]");
+	    	}
+		  }    
+		}
+    
 	}
 }