If you've been running your blog for any length of time, you can easily forget what files you've uploaded by using the WordPress uploader. Lisa used to have to log in to her Web server via FTP and view the Uploads folder to see what she had in there.
Now, the WordPress Media Library allows you to conveniently and easily discover which files are in your Uploads folder.
To find an image, video, or audio file you've already uploaded by using the file uploader and to use that file in a new post, follow these steps:
All the files you've ever uploaded to your blog appear because of the File Uploader feature (see Figure 4-3). Files you uploaded through other methods, such as FTP, don't appear in the Media Library.
The correct HTML code is inserted into the Post text box.
WordPress video and audio plugins
You can find some great WordPress plugins for audio and video handling. Check out Book VII for information on how to install ...