How to play mp3 file from relative folder?

Question

I tried to play a mp3 file from relative folder. I defined xaml look like.

<MediaElement x:Name="background_Sound" Source="\Music\Background_sound.mp3" LoadedBehavior="Pause" Volume="0.3" />

I want to play this file when the form open:

public MainWindow()
        {
            InitializeComponent();
            background_Sound.LoadedBehavior = MediaState.Play;

        }

But nothing happens. I tried full path other mp3 Source = "E:\test.mp3", it worked well.

I tried to find more solutions from internet. Can you give me your advance. Thank you so much.

Does this answer your question? [Getting the application's directory from a WPF application](https://stackoverflow.com/questions/938421/getting-the-applications-directory-from-a-wpf-application) — Nawed Nabi Zada, Nov 14 '22 at 10:16

score 0 · Accepted Answer · answered Nov 14 '22 at 11:17

Make sure that

the MP3-File is located in a folder named Music in your Visual Studio Project
its Build Action is set to Content
the Copy to Output Directory option is set to Copy always or Copy if newer

Then load the file by a valid relative path URI, without a leading \.

<MediaElement Source="Music\Background_sound.mp3" .../>

Alternative URIs are ".\Music\Background_sound.mp3" or "Music/Background_sound.mp3" or "./Music/Background_sound.mp3"

1 Answers1