Traffic Limiter is a useful addon for blogs with many media files which can cause high data traffic.
There are three traffic limits to avoid over traffic costs: daily, weekly and monthly limit. If one of these limits is exceeded downloads will either be redirected to a custom URL or a custom message is displayed. For images you can define a fallback icon which is displayed instead of the message. Additionally a download bandwidth can be set for registered users and guests.

Also included is a statistic system which displays the current traffic consumption and individual file stats to see which media produces the most traffic.

If the Apache extension mod_rewrite is installed download links stay the same, if not links to media files are automatically redirected. It is recommended to install mod_rewrite, although this plugin works without this extension.

WordPress Plugin Page

WP-Filebase is a powerful file/download management plugin for WordPress.

It uses a category/sub-category/file taxonomy to keep everything structured. Providing a template system, the plugin is made for consistent output for file attachements and file lists including pagination and search functions.

Get it here.

With WP-Filebase you can…

• create dynamic paginated and sortable file lists
• build photo galleries
• embed flash (or other formats) videos using a template player
• easily publish MP3 and other audio files with automatic ID3 tag detection
• restrict downloads for certain user roles
• upload files from the front-end via widgets

Check out WIP documentantion before leaving a comment below. Feel free to post any bugs or feature requests. And remember: cool people donate.

Currently in Development:

• File Tags: Like tags of WordPress Articles, files can have multiple tags. In 0.2.9.9 you can only set tags and display them with the template variable %file_tags%. Listing all files with the same tags and tag links are not implemented yet.
• Bulk Actions, I know they are greatly missed ;)