csmangalovr

about a year ago, i got MD-505 from my brother because he got himself a new mp3. it worked fine for half a year, but after a few months when i am uploading my songs into MDs. i can listen to them right after they got transfer, but after i stop nd turn the player back on, it display "BLANK." i tried almost all of my MDs, but lucky me, every song on every MD i tried was erased(using Jukebox at this time). i thought it might be my computer nd programs' problem so i reinstalled my computer, but no luck. then i installed Jukebox again, but it doesn't work. and when my brother suggested i installed Sonic Stage just to try it out, it shows "Transfers are not allowed." i'm sure that there's no write protected on the songs. please help, or any suggestions.