Load mp3 from user file at runtime(windows)?

I'm trying to build an app that can play any song that the user drags into a specific folder. To my understanding asset budles don't work because they have to be prepared and specified beforehand. I've found solutions where people load it from the web, but not how to load whatever is in that folder.

 

You can use the same logic as loading from the web. As URL you have to pass

"file://" + path

.

 

Thanks, using WWW to get files from the local hard drive didn't seem intuitive to me.. Found this nice article and got it working now...at least until hitting the brick wall of not being able to play mp3 on windows, but ogg is fine as well.

https://www.raywenderlich.com/479-using-streaming-assets-in-unity

Code (CSharp):

1.  private List<AudioClip> songs;
2.  
3.  
4.     private void GetSongsFromFolder()
5.     {
6.         DirectoryInfo directoryInfo = new DirectoryInfo(Application.streamingAssetsPath);
7.         FileInfo[] songFiles = directoryInfo.GetFiles("*.*");
8.  
9.         foreach (FileInfo songFile in songFiles)
10.         {
11.            StartCoroutine(ConvertFilesToAudioClip(songFile));
12.         }
13.        
14.     }
15.  
16.     private IEnumerator ConvertFilesToAudioClip(FileInfo songFile)
17.     {
18.         if(songFile.Name.Contains("meta"))
19.             yield break;
20.         else
21.         {
22.             string songName = songFile.FullName.ToString();
23.             string url = string.Format("file://{0}", songName);
24.             WWW www = new WWW(url);
25.             yield return www;
26.             songs.Add(www.GetAudioClip(false,false));
27.         }
28.     }

.

 

The WWW class is the old way which is recommended not to use anymore. Instead you should use UnityWebRequest like this:

Code (CSharp):

1. using (UnityWebRequest web = UnityWebRequestMultimedia.GetAudioClip(url))
2. {
3.     yield return web.SendWebRequest();
4.     if(!web.isNetworkError && !web.isHttpError)
5.     {
6.         var clip = DownloadHandlerAudioClip.GetContent(web);
7.         if(clip != null)
8.         {
9.             songs.Add(clip);
10.         }
11.     }
12. }

 

Only WAV files works for me (locally using "file://"). Has anyone succeeded with ogg files?

 

The script I posted above works with ogg (on windows) for me.

I was actually curios, once I imported the files, is there a way to save it? Right now everytime I start the app it has to load in the ogg files and freezes for a bit if there are more than 5 songs.

 

To make it works with MP3 files make sure to add AudioType.MPEG

Code (CSharp):

1. IEnumerator GetAudioClip(string fileName,List<AudioClip> audioClips)
2.     {
3.         UnityWebRequest webRequest = UnityWebRequestMultimedia.GetAudioClip(
4.             filePath+"/"+fileName,AudioType.MPEG);
5.          
6.         yield return webRequest.SendWebRequest();
7.  
8.         if(webRequest.isNetworkError)
9.         {
10.             Debug.Log(webRequest.error);
11.         }
12.         else
13.         {
14.             AudioClip clip = DownloadHandlerAudioClip.GetContent(webRequest);
15.             clip.name = fileName;
16.             audioClips.Add(clip);
17.  
18.         }
19.     }