Accessing files inside JAR folder

Hello friends...

I have developed a JAR file that contains the sample audiotesting code. The JAR file contains a folder called wavfile which holds the wavefiles of the project. I used to get the current dir of the JAR by adding the follwing code into it:

System.getProperties("User.dir"+"\\WavFile");

But when I try to run this file in another Windows system it is not working.

The code searches for the wavefile where the jar has been loaded

For example: If I load my JAR file in C:\\ then the code searches for the wavefile folder in C:\\ and not inside the JAR file and throws me the error

File not found:C:\\WavFile\\English\\mysound.wav

Any ideas for me .....