Steven Vachon

This plugin allows you to create internal <code><a></code> links within your content that will not break when things get renamed or moved. While there are similar plugins available, they do not offer important SEO options.
You can add any HTML attribute to your link as long as it’s prefixed with “attr_”. And because it supports attributes that may not currently exist, it is future proof.
Examples:
<ol>
<li>Link to a post/page by ID or slug
<ul>
<li>Shortcode: <code>[link id="1234"/]</code></li>
<li>Shortcode: <code>[link slug="post-slug"/]</code></li>
<li>Output: <code><a href="http://domain.com/post-slug/">Post Title</a></code></li>
</ul>
</li>
<li>Link to a category by slug
<ul>
<li>Shortcode: <code>[link cat="cat-slug"/]</code></li>
<li>Output: <code><a href="http://domain.com/cat-slug/">Category Name</a></code></li>
</ul>
</li>
<li>Link to a tag by slug
<ul>
<li>Shortcode: <code>[link tag="tag-slug"/]</code></li>
<li>Output: <code><a href="http://domain.com/tag-slug/">Tag Name</a></code></li>
</ul>
</li>
<li>Custom text instead of retrieved title
<ul>
<li>Shortcode: <code>[link id="1234"]custom text[/link]</code></li>
<li>Output: <code><a href="http://domain.com/post-slug/">custom text</a></code></li>
</ul>
</li>
<li>Additional attributes for SEO/other
<ul>
<li>Shortcode: <code>[link id="1234" attr_rel="something" attr_itemprop="specialty"/]</code></li>
<li>Output: <code><a href="http://domain.com/post-slug/" rel="something" itemprop="specialty">Post Title</a></code></li>
</ul>
</li>
</ol>

SEO Internal Link Shortcode

Internal links to posts, custom-type posts, pages, categories and tags with any HTML attribute(s).

Sandeep Verma

Allows WordPress users to easily use HTML5 Audio the element enable native audio playback within the browser. It supports all browsers i.e. Firefox, Chrome, Safari, IE and Opera. 
HTML5 Audio Player with Playlist, Repeat, Stream Seek, Volume Control, Timer, Next, Previous, Play-Pause option.
Important: before updating HTML5 MP3 Player with Playlist Plugin, please back up your database and files. For help with updates, visit our website, Paid Plugin Users do not upgrade to Free Plugin.
Free HTML5 MP3 Player HTML5Tap players are hosted on CDN https://player.html5tap.com/v1 so for best performance we are using iframe based embed code in this plugin from CDN.
HTML5 Audio Player with Playlist 
https://www.youtube.com/watch?v=dLjtYaxs5EE
Browser & Format Support 
Audio MP3 Codec With Flash as a fallback, it should work pretty much anywhere. It has been verified to work across: * Android (2.2+, w/Flash), Android (4.0+) * Mobile Safari (iOS 3+) * Firefox (3+, w/ Flash) * Opera (10+, w/ Flash) * IE (6, 7, 8, w/ Flash) * Chrome (7+) * Safari (4+)
Read MP3 Folder URL
This plugin can read MP3 folder like http://www.domain.com/mp3/ and automatically create dynamic horizontal & vertical playlist
MP3 Folder with song’s index list 
http://www.domain.com/mp3/ (public) or http://www.domain.com/mp3/list.php (private)
Read Feedburner URL
This plugin can read feedburner url like http://feeds.feedburner.com/thejustinwayneshow and automatically create dynamic horizontal & vertical playlist
Features
<ul>
<li>Folder: MP3 URL or MP3 Songs folder or Feedburner XML</li>
<li>Prev / Loop / Next in playlist</li>
<li>Embed full playlist</li>
</ul>
Paid Features
<ul>
<li>Self hosted player files</li>
<li>Best support on email</li>
<li>Download songs option </li>
<li>MP3 Song’s information using ID3 Tags</li>
<li>Customize Social Share on Facebook & Twitter</li>
<li>Volume Control</li>
<li>Embed Code Option</li>
</ul>
<a href="https://www.svnlabs.com/store/product/html5-mp3-player-for-wordpress/" rel="nofollow ugc">Buy Now HTML5 MP3 Player</a>

HTML5 MP3 Player with Playlist Free

Allows Wordpress users to easily use HTML5 Audio the element enable native audio playback within the browser. It supports all browsers i.e.

SEO Internal Link Shortcode vs HTML5 MP3 Player with Playlist Free