MediaShout Bridge is a one-license per purchase. It will install on only one machine.The file created with Bridge is still a PowerPoint file. It can be played on ANY computer as long as it has PowerPoint or a compatible PowerPoint Viewer. So, you do not need Bridge on the playback computer. If you need to use the program for more than one machine, please purchase a license for each machine. If you need to purchase 5 or more licenses, please contact our sales team.