I'm trying to install Java Media FrameWork on my computer (Windows 7 64 bit, I'm using netbeans 7.1). I've downloaded it from http://www.oracle.com/technetwork/java/javase/download-142937.html. I've tried the Cross-platform Java version as well as the Windows Performance Pack version. But the netbeans IDE is not able to see any packages from this framework. For javax.media. I get only entries for jai and j3d, nothing more. I've tried to modify the Classpath and Path environment variables, without luck. Path seem's as follows: JMFDIR=c:\Program Files (x86)\JMF2.1.1e,CLASSPATH=.;C:\Program Files (x86)\Java\jre6\lib\ext\QTJava.zip;%JMFDIR%\lib\jmf.jar;%JMFDIR%\lib\sound.jar;.;%CLASSPATH%. After installing the Windows Performance Pack version I've the application JMstudio, and it is running correctly. What is going wrong?