setting options when preloading

making preloadNext public

Author: mynameisguy

SwiftAudioEx/Classes/AVPlayerWrapper/AVPlayerWrapper.swift

@@ -356,7 +356,8 @@ extension AVPlayerWrapper: AVPlayerObserverDelegate {
         let urlString = item.getSourceUrl();
         let url =  URL(string: urlString);
 
-        let asset = AVURLAsset(url:url!);
+        let options = (item as? AssetOptionsProviding)?.getAssetOptions()
+        let asset = AVURLAsset(url:url!, options: options)
         let keys = ["playable", "tracks", "duration"];
 
         asset.loadValuesAsynchronously(forKeys: keys, completionHandler: {

SwiftAudioEx/Classes/QueuedAudioPlayer.swift

@@ -232,7 +232,7 @@ public class QueuedAudioPlayer: AudioPlayer, QueueManagerDelegate {
         self.event.queueIndex.emit(data: (nil, 0))
     }
 
-    func preloadNext() {
+    public func preloadNext() {
         let nextItems = queueManager.nextItems
 
         if nextItems.count > 0 {