int start = [[[arrayOfArgs objectAtIndex: 0] objectForKey:@"index"] intValue];
int end = [[[arrayOfArgs objectAtIndex: [arrayOfArgs count]-1] objectForKey:@"index"] intValue];
NSRange range = NSMakeRange(start, end-start);
+
[self willChange:NSKeyValueChangeInsertion valuesAtIndexes:[NSIndexSet indexSetWithIndexesInRange:range] forKey:@"media"];
for( NSDictionary * args in arrayOfArgs )
{