The last month or two, the folks at my company, Digital Messenger have been working hard building a multimedia player system which allows multimedia files to be played at tens or hundreds of locations, and to be updated automatically via an ordinary telephone line.
The whole thing is built on Linux, so as to allow us to strip down the application as much as possible, and make it ultra-reliable. It also helps us keep the costs down.
In this case, we chose Linux over FreeBSD because of the greater range of drivers available for sound cards and modems.
If you think you have a use for this type of video-audio player system, just give me a call!