Ok, you're using the CfgMusic class wrong. There is no "titles" section. Here is one from the opflashpoint.org tutorial:
class CfgMusic // Overall class name
{
tracks[]={musicfilename}; // declaring the music file's name
class musicfilename // the actual declaration
{
name = "";
sound[] = {musicmusicfilename.ogg, db+30, 1.0}; // declares which ogg file to use
};
};
Also, db+250 is WAY too high
Typical values range from db-40 to db+40, depending on the initial volume of your sound file.
Hope that helps.