Player can play mp4 if i install fobs4jmf?but

i install fobs4jmf.and Fobs_jmstudio.exe worked well with mp4 as well as jmstudio.exe.but when i use some code to player mp4,it can't work.and it can work well with other format.why?
[197 byte] By [capea] at [2007-11-27 5:05:10]
# 1
You need to update the registry of JMStudio (not Fobs4JmfStudo)Go to the Fobs4Jmf website and follow the manual installation instructions given there.
--stallion--a at 2007-7-12 10:23:35 > top of Java-index,Security,Cryptography...