The Raspberry Pi is a very useful computer that can be used for many different things. The people over at Imperial College Robotics Society have a new way to use your favorite treat. They designed a program that turns the Pi into an FM radio transmitter. This instructable will show you how to make your own Pifm transmitter, installing and using the program.
Some Updates (03/11/15):
There is a new program up that I wrote where you only need the filename (NOT THE PATH). It will install everything for you, all you have to do is type in the frequency and the filename to be played (WAV or MP3, stereo or mono). github.com/CodyJHeiser/PiStation
ICRS has released another version on PiFM a while back, it allows you to play stereo sounds (mp3 files) over the radio now. You can go to this link here to check out the new information (the new code is included in my program listed above.)
More Updates (08/06/15):