Because sometimes you don't want to tab to iTunes when you're listening to a stream.

audiostream.m

//gcc -o audiostream audiostream.m -framework Foundation -framework AppKit -framework AVFoundation

#import <Foundation/Foundation.h>
#import <AVFoundation/AVFoundation.h>
#import <AppKit/AppKit.h>

int main(int argc, const char * argv[]) {
    
    @autoreleasepool {
        
        NSUserDefaults *args = [NSUserDefaults standardUserDefaults];
        NSString *stream = [args objectForKey:@"s"] ?: [args objectForKey:@"-stream"];
        
        if (!stream) {
            NSLog(@"Usage: audiostream -s,--stream <stream URL>");
            return 1;
        }
        
        AVPlayer *player = [[AVPlayer alloc] initWithURL:[NSURL URLWithString:stream]];
        [player play];
        
        [[NSApplication sharedApplication] run];
    }
    
    return 0;
}