Mp3

hi, my name is GJ, i bought the panasonic sv-sd50 a few years ago and i missplaced the intalation cd, since then i have had my pc cleaned and lost the program off my pc. i am trying to load load songs onto the scan disk and when i play them on my pc it works but when i put it in the player it says no track and wont work. if you can help please let me know how i can make the unit work without the cd and program instlled on my pc or what i have to do to make it work, thank you. gj