Embedded audio and video files greatly increase the published file size. iSpring Pro decreases the size dramatically when converting PowerPoint to Flash using effective compression methods available in Flash technology. iSpring Pro lets you control compression level and thus the size of your presentation. The higher the compression level, the smaller your published Flash files. To manage compression, click the "Publish" button on the iSpring Pro toolbar and then adjust image/audio/video compression options on the "Compression" tab. You can read more about compression
on the iSpring web site.