Simon Wheatley

This plugin adds a widget to display your upcoming events (gigs) from <a href="http://last.fm/" rel="nofollow ugc">Last.FM</a>, with 
options for displaying full venue details, linking, etc. Events are displayed using valid 
<a href="http://microformats.org/wiki/hcalendar" rel="nofollow ugc">hCal</a> <a href="http://microformats.org/" rel="nofollow ugc">Microformat</a> code (makes no 
difference to the display, but plays nicer with the web in general).
This plugin is still in development, but is stable enough that I use it on my own blog. Once other 
people have used it successfully for a while I’ll feel happier labelling it stable.
Please feel free to try the plugin on previous versions of WordPress, I think it may work on 2.2, maybe lower.
Please let me know how you get on.
<h3>Requests</h3>
I’m simply noting requests here, I’ve not necessarily looked into how possible any of these are or how much effort they might require.
<ul>
<li>BUG REPORT: A lot of the timestamps for events aren’t correct therefore, you see “495 months ago.” because it shows a timestamp of 1969 for some reason even though the dates are correct on last.fm. Is there a way you could have it to just display the date instead of trying to calcuate the time until? (Reported by <a href="http://www.deadlydesigns.com/" rel="nofollow ugc">Mike</a>)</li>
<li>REQUEST: Would it be possible to have the link to last.fm events open in a new window so it will not load over top of the blog? (Requested by <a href="http://www.deadlydesigns.com/" rel="nofollow ugc">Mike</a>)</li>
</ul>

Last.FM Events

This plugin adds a widget to display your upcoming events (gigs) from Last.FM on your Wordpress blog (using the hCal Microformat).

j.org

This plugin adds a sidebar-widget to list an artists upcoming shows or top tracks from Last.FM (using the new 2.0 REST API).
This plugin requires PHP 5.
Current features:
<ul>
<li>event listing</li>
<li>top track listing</li>
<li>multi-widgets (add arbitrarily many widget instances to your sidebar)</li>
<li>comes with many pre-defined widget layouts</li>
<li>complete customization of widget layout possible via format strings and tags</li>
<li>I18n available: English, German, Russian. Add your own!</li>
</ul>
Please let me know about bugs and improper translations you may encounter.
<ul>
<li><a href="http://www.brain-jek.de/wordpress/lastfm-for-artists/" title="Plugin Website" rel="nofollow ugc">documentation</a> 
The format of dates and times are part of the translation files. Let me know if this should be another user-editable option.</li>
</ul>

Last.fm For Artists

This plugin adds a fully customizable sidebar-widget to list an artists upcoming shows or top tracks from Last.FM (using the new 2.0 REST API).

Last.FM Events vs Last.fm For Artists