When user create a blog, it is possible to add photos, videos, but not audios. So, allowing to add audio files to blogs is a missing function in the current Wix blog version.
Thx,
Roger
Hi Roger, it’s currently not possible to insert music or additional audio files to the Wix Blog, but you can vote for this request here .
I know it is not possible for the current version. Hope developers will consider adding this function for future release. With audio file insertion to complete the function as we already have photo and video insertion.