So far the files we have seen had no encryption. However some of our users pointed out there are some files which are encrypted. While the encrypted KFN files were still analyzed and dumped properly, the resulted files were unreadable. Of course the player need to support those files too, so this is something which we need [...]

This is quite simple. We look at the song.ini file and it is obvious immediately where the text and the timing information is as those are the only lines with enough numbers.

In the first part we found out the header format, and that it does not provide us with the directory location. However we know there must be a directory, as the KaraFun application must know where exactly in a file the files are stored, and how large are they. At minimum there should be the directory [...]

Several of our users have expressed disappointment that our Ulduzsoft Karaoke Player for Android does not support the popular KaraFun Karaoke format. This format seem to be very popular in some countries, and unfortunately there seem to be no player on Android capable of playing those files. Even the KaraFun Android application does not play those files [...]