ersatzpole

<ul>
<li>The plugin generates a shortcode to dynamically display an audio player with playlist.</li>
<li>Displays tracks in the playlist generated from an Audio Element custom post type. </li>
<li>Upload tracks in different formats for browser compatability.</li>
<li>Customise colors of player.</li>
<li>Audio player will resize in browser window if using responsive theme and fit smaller screen-widths.</li>
<li>See the ‘other notes’ tab for shortcode instructions.</li>
<li>The plugin is compatible with the latest version of WordPress and works on touch screen devices.</li>
<li>Multiple Players per page supported.</li>
<li>Shortcode for displaying single track player.</li>
<li>Randomise playlist with no repeated tracks or freely.</li>
<li>There is no flash fallback at the moment so the player will be hidden on browsers which do not support the HTML5 audio tag.</li>
</ul>
<h3>How to use</h3>
Put this shortcode in your post or pages 
[ml_audio] The default shortcode will display all posts. 
audio_category=”Your-category-slug”
[ml_audio audio_category=”Your-category-slug”] Will display posts from a specific audio category or categories. Separate category slugs by commas.
[ml audio auto=”1″] Will intialise the player playing the first track on the playlist (Do not use for more than one player per page).

ML Responsive Audio player with playlist Shortcode

This plugin provides an HTML5 Audio player for your wordpress theme..

Max Chirkov

Advanced Text Widget is a text widget that allows you to execute raw PHP code and specify on which pages it should be displayed. It comes with 10 default visibility conditions. You can edit and/or add your own visibility conditions as well. Conditions support arguments which could be strings and/or arrays.
Features:
<ul>
<li>10 Default widget visibility conditions with over 20 application possibilities.</li>
<li>Add unlimited custom conditions.</li>
<li>“Advanced Text” widget with raw PHP support and shortcodes execution.</li>
</ul>
PRO Version:
<ul>
<li>Apply visibility conditions to ANY widget.</li>
<li>Add custom CSS IDs/Classes to ANY widget.</li>
<li>Import/Export your visibility conditions to re-use on other sites.</li>
</ul>
<a href="http://simplerealtytheme.com/plugins/atw-pro/" title="Advanced Text Widget PRO" rel="nofollow ugc">Check out PRO Version</a>
Credits:
<ul>
<li>Author: Max Chirkov</li>
<li>Author URI: <a href="http://SimpleRealtyTheme.com" title="Real Estate Themes for WordPress" rel="nofollow ugc">http://simplerealtytheme.com</a></li>
<li>Copyright: Released under GNU GENERAL PUBLIC LICENSE</li>
</ul>

Advanced Text Widget

2nd EDIT: The plugin has now been updated, so my original review stands.

1st EDIT: Even though this was a great plugin in its day, it hasn't been updated in over 2 years and was flagged as vulnerable to attack when I ran WPScan. I therefore can't recommend it for now.

Original review: Can't imagine building a WordPress site without this, it's normally the first plugin one I install. Makes adding custom content to sidebars on a per-page basis an absolute breeze. Very flexible, you can type PHP and shortcodes in the text area and it displays whatever you want. A must have for any WordPress site developer.

Essential plugin for all my sites

Text widget with raw PHP support and conditional visibility settings. Flexible conditional options with ability to edit and add custom conditions.

ML Responsive Audio player with playlist Shortcode vs Advanced Text Widget