How to Async Get Audio Duration in ActionScript - Code Snippet

// Task: Async Get Audio Duration
// Language: ActionScript

function async_get_audio_duration() {
    // Implementation for Async Get Audio Duration
    var result = ...; // Initialize variable
    // TODO: Implement core logic here
    // Step 1: Prepare data
    // Step 2: Process Async Get Audio Duration
    trace("Done");
}