player_parser.php is the file called by the player to get infos about the tracks .
for your problem it's quite hard to help you with such a little infos , idon't know anything except the fact it doesn't work for you ... how do you want i can help ?? at least tell me the oscommerce version u use , contributions that u already have installed . remote or localhost ,, every infos that can be usefull ..
you can change the design , use the .fla source file for this ..
i'm currenctly working on easy way to customise it with a template system ... still in progress .