To add Music on Hold files to your account, click the Add Music button on the Music on Hold center.
The Add Music pop-up window appears.
Click the Browse button to find the MP3 or.WAV file that you want to upload. Click the file and click Open. Click Upload to add to your Music on Hold library.
After the file is uploaded, you can play it on your computer by clicking the play icon to the left of the file on the Music on Hold page.