how to synchronize my timer together with my trackbar c#?

Hello to everyone :D

well some days ago i have been reading some information about c#, well after that i decided to make a Mp3 player,

i have read a lot of information for the "timer" but i haven't made it...

well nowadays i want to make the trackbar works together with the timer. it's means when i  move the trackbar and the timer show me the time's music  in a label right. i have the code for the trackbar! i have synchronized my trackbar with the music it means when i move the trackbar the music works very well,

but i haven't found the other code for the "TRACKBAR  works together with TIMER"

To be honest i had made a "stopwatch" but it didn't work very well, when i compiled the code!. 

thanks for all the answer.

thanks you for take the time to answer me :)

Best Wishes