Solar physicists from Lockheed Martin and the Solar Physics and upper-Atmosphere Research Group at the Department of Applied Mathematics of the University of Sheffield, UK have used computer modeling and some of the highest resolution images ever taken of the solar atmosphere to explain the cause of supersonic jets that continuously shoot through the low atmosphere of the Sun.

The LOCKHEED MARTIN NEWS RELEASE at Spaceflightnow goes on to say that sound waves turn into shock waves that propell matter into the solar wind.

Nice work combining the Swedish 1-meter Solar Telescope, Trace and SOHO for there conclusion.

If you want to hear what the Sun (or other objects) sounds like check out <a href= http://www.spacesounds.com/navigator/index.html . Spacesounds.com
Click on the Sun and then click in the box once the Sun is centered in the window to hear the sound.