We've figured out how to detect the Sun's magnetic fields, and use Sun sounds to peer deep down in it.

Global Oscillation Network Group: You'll find links to GONG's worldwide sites, lots of current science, and educational materials. Frank Hill and LFSUN science advisor John Leibacher work on this project.

The basics of transforming soundwaves on the Sun into information about its interior (a.k.a. "helioseismology", see Activity 2.3 in the LIVE FROM THE SUN Teacher's Guide), including links to actual "Sun Sounds."