gistfile1.txt

@implementation NSApplication (PlayChanger)
- (void)PlayChanger_playpause {
    NSLog(@"Play Changer's playpause called!");
}
@end

@implementation PlayChanger

+ (void)load
{
    NSLog(@"Play Change Loaded");
    NSError *error = NULL;
    [NSClassFromString(@"iTunesApplication") jr_swizzleMethod:@selector(playpause) withMethod:@selector(PlayChanger_playpause) error:&error];
    if (error != NULL)
        NSLog(@"Erorr! %@", error);
}

@end