First log in to your Sina blog account, which is a unified Sina account that can be used for other services just like logging into QQ. Search Sina Blog on Baidu, enter your username and login password, and click to log in.

After successfully logging in, you will reach the blog interface. You will find an option "Page Settings" on the right side of the interface.

Select "Page Settings" and then select "Custom Plug-in" at the top of the interface.

Select "Custom Plug-in" and then continue to select "Simplified Music Player".

After entering, you need to select the background music you need for your blog, click Select Song and select the song track.

After selecting "Next", the system will prompt you whether you are sure to add the music library. This process will take some time, so wait patiently for 1 minute.

After completion, the system will automatically go to the blog interface. At this time, you will see the player in the blog and listen to your favorite music.