how to add multiple audio files in c# windows application

Hi,
You dont need to add Multiple Audio files in your winform.There is 2 way you can do this
1) Store all your Audio Files in your root folder.Display all the Root folder Audio file names in Combo box order by name .by user selection you can play the Audio.
To play the Audio file check this link

Playing .wav files using C#[^].
2) Create a new form as Upload Audio file,Upload Audio file to your root folder,Save the File name in your DB.
In your Audio Play form load all the Audio file name or select the needed Audio files,Play One by one on Next Button Click.