[Lordzy]

no need of reinstalling samp.
First copy your tracks in my documents/gta sanandreas userfiles/user tracks.
Then open gta sanandreas.
Choose options>>Audio options>>usertrack options.
Then scan the user tracks 2 or 3 times.
Now go to main menu and choose newgame or loadgame.
Get in a car and choose user track player.
And if your song is not working press f5 button.
Then your song will come.
After that close gta sanandreas and open samp and play.
Have Fun,xD!

Hope this will help you