The memorial won't open until the fall and the museum isn't expected to be ready until next year, yet every day visitors come to the World Trade Center site in lower Manhattan, peering over the construction fence into a space that's now crowded with cranes and partially-completed buildings.

They ask locals to point out where the towers once stood and stare in silence, no doubt imagining what it must have been like during the attacks on September 11th.

Soon, those visitors will have a new tool to help them grasp what happened in the space before them. A smartphone app will allow visitors to hear the voices of witnesses who stood in the same spot during the attacks.

"They can actually go to these locations and hear stories stream automatically into their headphones," said Broadcastr co-founder Scott Lindenbaum, who describes the app as "just like a museum tour of the entire world."

Broadcastr, which is slated to launch later this month, allows anyone to record his or her story and tag it to a map. However, the audio from September 11th witnesses was provided by the 9/11 Memorial and Museum.

"It was simple, it's smart, and it really fits with what we've been doing," said Jenny Pachucki, an oral historian at the museum. She says she and her colleagues have recorded hundreds of stories and have given Broadcastr access to about 30 of the recordings.

Along with its app for iPhones and Android phones, Broadcastr will also be available online.

To watch the latest segment in the Rise of Freedom series, tune into Fox Report with Shepard Smith Thursday, February  17th at 7 p.m. ET. You Can catch up on all the segments by visiting www.foxnews.com/freedom