By tagging, do you mean here in the community posts, or on the tracks in Spotify?
You can put in your own tags here in the posts in "Message tags", if that is what you wanted to do.
Tagging of the Spotify tracks themselves are done by the publishers or their agents. If you notice any content errors, you can report them using this form and the information will be passed on by Spotify.
It would seem there is a slight issue with the URI links like this one: spotify:album:03Qh833fEdVT30Pfs93ea6 when posting them on the community. The code on the community does not seem to render the miniplayer correctly.
make sure you are on the HTML tab of the posting options when copying and pasting that embed code above. You can also use the Preview tab in the posting options, before you make the post to see if everything looks right and then make your post that way.
If you wish to do music postings this way. Use the Spotify desktop app, when you right click on either single tracks, albums, or playlist links there should be an embed link option there in the right click context menu to use, which reads Copy Embed Code. Use the embed code, and when making posts make sure to copy and past that code into the HTML tab of all posts, and the miniplayer should show now.