If your post contains audio, then you should use this post format. Select Audio in the appeared metabox and add link to your mp3 file.
Written by NFadmin
I am a professional blogger interested in everything taking place in cyberspace. I am running this website and try my best to make it a better place to visit. I post only the articles that are related to the topic and thoroughly analyze all visitors’ comments to cater to their needs better.
This format can be used to display images as a gallery. To attach images to the post please use Add Media button, then choose Create Gallery button, choose the images you want to be displayed and press the button Create