metadata from an audio stream using MobileVLCKit does not call VLCMediaDelegate

I have using the follow lines:\

self.mediaPlayer = [[VLCMediaPlayer alloc] initWithOptions:@[@"--extraintf=", [NSString stringWithFormat:@"network-caching=%f000", self.buffer]]];
self.mediaPlayer.delegate = self;

VLCMedia *media = [VLCMedia mediaWithURL:@"http://cadena100-streamers-aac.flumotion.com/cope/cadena100.aac"];
self.mediaPlayer.media = media;
self.mediaPlayer.media.delegate = self;

The problem is that the VLCMediaDelegate is never called.\

Using the 2.2 version works fine ( https://pasteboard.co/Hc9zgXN.png ) but the 3.0 no.