Add slick looking Amazon MP3 widgets to your blog posts in a brain-dead simple way! 
Just say [mp3] to add mp3 tracks anywhere on your blog.
The MP3 Clips widget plays album previews and displays the album art in the background. It’s as easy as typing [mp3] anywhere in your post and you get a beautiful Flash widget with mp3 tracks.
There are many ways to create an MP3 widget. Here are some:
<ol>
<li>
<code>[mp3]</code> 
This creates an MP3 widge containing the latest MP3 bestselling tracks.
</li>
<li>
<code>[mp3 list="Bestsellers" browse_node="324527011"]</code> 
This creates a MP3 widge containing the latest ‘Hard Rock and Metal’ bestsellers. 
You can get the browse_node values for various music genres here: http://www.browsenodes.com/node-324382011.html
</li>
</ol>
Here are the most popular browse nodes: 
Alternative Rock (324384011) 
Blues (324396011) 
Broadway & Vocalists (324409011) 
Children’s Music (324414011) 
Christian & Gospel (324420011) 
Classic Rock (324431011) 
Classical (324442011) 
Country (324492011) 
Dance & DJ (324504011) 
Folk (324519011) 
Hard Rock & Metal (324527011) 
International (324537011)
Jazz (324552011) 
Latin Music (324570011) 
Miscellaneous (324577011) 
New Age (324586011) 
Opera & Vocal (324591011) 
Pop (324608011) 
R&B (324621011) 
Rap & Hip-Hop (324633011) 
Rock (324645011) 
Soundtracks (324660011)
<ol>
<li>
<code>[mp3 keywords="Sunshine" browse_node="324608011" title="Sunshine tracks in Pop"]</code> 
This creates an MP3 widget containing all the ‘Pop’ tracks with the word ‘Sunshine’ in the album/song title.
</li>
<li>
<code>[mp3 asins="'B0011Z0YR2,B00137W4P8,B0013G0PG4,B001AU8ZLK,B001AUCJZ8,B001AUEMDK,B001AU8YB6" title="My favorite MP3 songs." shuffle_tracks="True"]</code> 
This creates an MP3 widget with the specified tracks. The tracks are displayed in random order each time that it is displayed.
</li>
<li>
<code>[mp3 browse_node="324608011" tag="ohmyki-20"]</code> 
This creates an MP3 widget containing bestselling mp3 tracks in Pop. Since the ‘tag’ parameter is specified, you will earn an Affiliate referral fee for any sales made through this widget.
</li>
</ol>
You can customize a lot more in your MP3 widget. Check out the FAQ section for more details.

WP-Amazon-MP3-Widget

Add slick looking Amazon MP3 widgets to your blog posts in a brain-dead simple way! Just say [mp3] to add an MP3 widget anywhere on your blog.

toddiceton

<h3>All the other WordPress mp3 players were crappy or ugly so I made a better one.</h3>

WPaudio is a simple mp3 player. The minimal design fits any blog. It’s easy to use. It works with mobile devices like iPhone and Android. The file is small and won’t slow down your site.
<h4>Clean design with intuitive controls</h4>
Everything’s tucked out of the way until you click play. Jog the track by clicking the position bar. Simple.
<h4>Easy to install, easy to use</h4>
Install directly from WordPress (just go to Plugins -> Add New) and start embedding mp3s immediately. You can convert all mp3 links or only the ones you select.
<h4>Compatible with your old Audio Player tags</h4>
Want to switch to a better player? Just deactivate Audio Player and WPaudio will take care of it.
<h4>Won’t slow down your site</h4>
WPaudio was written for performance. It uses WordPress’s built-in scripts and HTML5.
<h3>How to use WPaudio</h3>
<ul>
<li>
If you want to convert every mp3 link into a player, go to Settings -> WPaudio and select the first option, Convert all mp3 links.
</li>
<li>
If you want to selectively convert mp3 links, just add the <code>wpaudio</code> class to the links you want converted, like this:
<pre><code><a href="http://url.to/your.mp3" class="wpaudio">Artist - Song</a>
</code></pre>
</li>
<li>
If you want to disable downloads or specify a different download URL, use the advanced tags.
<pre><code>[wpaudio url="http://url.to/your.mp3" text="Artist - Song" dl="0"]
</code></pre>
</li>
<li>
For autoplay, just add autoplay=”1″ to your tags.
<pre><code>[wpaudio url="http://url.to/your.mp3" text="Artist - Song" autoplay="1"]
</code></pre>
</li>
</ul>

WPaudio MP3 Player

Play mp3s and podcasts in posts with the simplest, cleanest, easiest mp3 player. New HTML5 support for iPhone, iPad, Android & mobile browsers.

WP-Amazon-MP3-Widget vs WPaudio MP3 Player