my sansa clip has been hang up..

my sansa clip has hang up…it really froze…i dunno what happen on it…im just browsing my list of songs then suddenly it just hang up…and im using it only for  2 weeks…and im trying to turn it off but it doesnt do…somebody help me

Have you tried resetting it?
Push the switch into On/Off position and hold it there for (afair) 15sec.