jazzigor

“play-button” lets you place one or more simple mp3 play buttons to your posts, pages or widget contents. 
It’s as easy as placing the simple <code>[play-button:mysong.mp3]</code> mark-up anywhere in your text.
This plugin uses the free flash-based mp3 player by Fabricio Zuardi and the 
<a href="http://musicplayer.sourceforge.net" rel="nofollow ugc">“XSPF Web Music Player”</a> team.
More info at <a href="http://www.thickthumb.com/open-source/play-button" rel="nofollow ugc">this plugin’s homepage</a>. 
See a real-world use example at this <a href="http://www.jazzmadrid.com/cd/" rel="nofollow ugc">music site</a>.

play-button

"play-button" lets you place one or more simple mp3 play buttons to your posts, pages or widget contents.

grooveshark

Currently, our plugin is incompatible with the latest version of WordPress. To get your Grooveshark Widget on your blog, we recommend using:
<ul>
<li><a href="https://wordpress.org/extend/plugins/embedly/" title="Embedly" rel="ugc">Embedly</a>, a WordPress plugin that allows you to embed content from many of your favorite sites, including Grooveshark. The free version of Embedly allows you to embed up to 10,000 URLs per month and has a friendly interface.</li>
<li>You may also use Gigya code to embed a Grooveshark widget into your blog. A quick tutorial on how to create and embed a WordPress widget is located here: <a href="http://help.grooveshark.com/customer/portal/articles/88918-embedding-a-grooveshark-widget-with-gigya" title="Grooveshark Help" rel="nofollow ugc">Grooveshark Help</a></li>
</ul>
The Grooveshark plugin is a WordPress plugin that allows you to insert a link to music on <a href="http://www.grooveshark.com" title="Grooveshark" rel="nofollow ugc">Grooveshark</a> or a <a href="http://widgets.grooveshark.com" title="Grooveshark Widget" rel="nofollow ugc">Grooveshark Widget</a> that allows visitors to play music as they view your blog.
<h4>Description</h4>
The Grooveshark plugin is a WordPress plugin that allows you to insert a link to music on <a href="http://www.grooveshark.com" title="Grooveshark" rel="nofollow ugc">Grooveshark</a> or a <a href="http://widgets.grooveshark.com" title="Grooveshark Widget" rel="nofollow ugc">Grooveshark Widget</a> that allows visitors to play music as they view your blog.
Grooveshark is a music website that allows visitors to listen to music and share music with friends. Registered users can also save favorite songs and playlists on Grooveshark. With millions of songs contributed by Grooveshark users, you can find just about any song to share with your friends and blog visitors.
The Grooveshark plugin utilizes the Grooveshark API to bring Grooveshark to your blog. Some of the main features are:
<ul>
<li>Easily find and add any song on Grooveshark to your posts, in link or widget format, as you write your post</li>
<li>If you are a registered Grooveshark user, find and add your favorite songs and your playlists to your posts</li>
<li>Preview songs while you edit with no need to open external pages</li>
<li>Add Grooveshark widgets to your blog’s sidebar or admin dashboard</li>
<li>Add RSS feeds to your blog’s sidebar that share your favorites and recently listened songs with your blog visitors</li>
<li>Allow your blog visitors to add music to post comments</li>
</ul>
What’s New in 1.4:
<ul>
<li>Adding music to your sidebar is now much easier with the new Grooveshark Sidebar options.</li>
<li>You can now preview widgets before adding them to your posts or sidebar under Appearance options.</li>
<li>Fixed a bug where some songs could not be added as links</li>
</ul>

Grooveshark for WordPress

The Grooveshark plugin allows you to insert music links or Grooveshark Widgets into your blog.

play-button vs Grooveshark for WordPress