The operation steps are as follows:

1. First, click Open Language Play, click My Chat Room in the interface, and then click Room Open. (as shown below)

2. Enter the interface and click Room Tools, and then click Music in the pop-up window. (as shown in the figure below)

3. Click three horizontal lines on the right side of the pop-up window, and then click Add Now. (as shown below)

4. Select a song in the interface, click it, and then click Finish to add a song. (as shown below)