File list (Check if you may need any files):
P2Pchat
.......\build
.......\.....\classes
.......\.....\.......\chatGUI
.......\.....\.......\.......\About$1.class
.......\.....\.......\.......\About.class
.......\.....\.......\.......\chat$1.class
.......\.....\.......\.......\chat$2.class
.......\.....\.......\.......\chat$3.class
.......\.....\.......\.......\chat$4.class
.......\.....\.......\.......\chat$5.class
.......\.....\.......\.......\chat$6.class
.......\.....\.......\.......\chat$7.class
.......\.....\.......\.......\chat.class
.......\.....\.......\.......\keyEvent.class
.......\.....\.......\.......\list$1.class
.......\.....\.......\.......\list$2.class
.......\.....\.......\.......\list$3.class
.......\.....\.......\.......\list.class
.......\.....\.......\.......\login$1.class
.......\.....\.......\.......\login$2.class
.......\.....\.......\.......\login$3.class
.......\.....\.......\.......\login.class
.......\.....\.......\.......\multichat$1.class
.......\.....\.......\.......\multichat$2.class
.......\.....\.......\.......\multichat.class
.......\.....\.......\.......\NewJFrame$1.class
.......\.....\.......\.......\NewJFrame.class
.......\.....\.......\lanchat
.......\.....\.......\list
.......\.....\.......\MServer
.......\.....\.......\.......\main.class
.......\.....\.......\.......\Mserver.class
.......\.....\.......\multicast
.......\.....\.......\.........\MultiCast.class
.......\.....\.......\.........\Receive.class
.......\.....\.......\trans
.......\.....\.......\.....\MainF.class
.......\.....\.......\.....\MainFrame_jbtnSend_actionAdapter.class
.......\.....\.......\.....\MainFrame_this_windowAdapter.class
.......\.....\.......\.....\MessageSocketThread.class
.......\.....\.......\.....\Server.class
.......\.....\.......\.....\SocketThread.class
.......\.....\.......\.....\TransFileDialog.class
.......\.....\.......\.....\TransFileDialog_jbtnCancel_actionAdapter.class
.......\.....\.......\.....\TransFileDialog_jbtnFile_actionAdapter.class
.......\.....\.......\.....\TransFileDialog_jbtnOK_actionAdapter.class
.......\.....\.......\.....\TransFileManager.class
.......\.....\.......\.....\TransFilePanel.class
.......\.....\.......\.....\TransFilePanel_jbtnCannel_actionAdapter.class
.......\.....\.......\.....\TransFilePanel_jbtnOK_actionAdapter.class
.......\.....\.......\voice
.......\.....\.......\.....\Capture.class
.......\.....\.......\.....\Client$1.class
.......\.....\.......\.....\Client.class
.......\.....\.......\.....\Playback.class
.......\.....\.......\.....\Server$1.class
.......\.....\.......\.....\Server.class
.......\.....\.......\.....\yuyinclient.class
.......\.....\.......\.....\yuyinserver.class
.......\build.xml
.......\img
.......\...\mchat.jpg
.......\manifest.mf
.......\nbproject
.......\.........\build-impl.xml
.......\.........\genfiles.properties
.......\.........\private
.......\.........\.......\private.properties
.......\.........\.......\private.xml
.......\.........\project.properties
.......\.........\project.xml
.......\src
.......\...\chatGUI
.......\...\.......\chat.form
.......\...\.......\chat.java
.......\...\.......\list.form
.......\...\.......\list.java
.......\...\.......\login.form
.......\...\.......\login.java
.......\...\.......\multichat.form
.......\...\.......\multichat.java
.......\...\img
.......\...\MServer
.......\...\.......\main.java
.......\...\.......\Mserver.java
.......\...\multicast
.......\...\.........\MultiCast.java
.......\...\.........\Receive.java
.......\...\trans