Can't change system sounds in ui folder
So I finally switched from the JellyTime 4.2.2 to the Mokee 4.4 rom and everything went fine.
But then I wanted to change the Lock and Unlock.ogg file, like I did before in the JellyTime rom.
I deleted the original files in the system/media/audio/ui folder and replaced them with my new files I already had converted from mp3 to ogg for the JellyTime rom.
Then I changed permissions to rw-r-r and restarted android.
But now there is no sound when I lock/unlock the phone. (Marker in soundsetting for lockscreen is set)
Is there something different betwen 4.2 and 4.4?