Event Tags is a plugin for wordpress which generates a link to a Last.FM event page from machine-tagged posts.
Simply tag your post with ‘lastfm:event=xxxx’ , then add the event_tags() tag to your templates.
You can see an example on my Franz Ferdinand review. Notice the ‘Last.FM event page‘ link just under the post title. This was generated by the plugin because I tagged the post with lastfm:event=804276
You can have the links appear anywhere in your posts by editing your template and choosing where to place the event_tags() tag.
Note that event_tags() must be used within The Loop.