Is this result of the IO Scan iPod classic 160 gb Fixable?

Retracts : 570

Reallocs : 2

Pendind Sectors : 1

PowerOn Hours :563

Start/Stop: 577

Temp : current 31C

Temp : Min 19C
Temp : Max 48c

Please help, the iPod is working but hanging a lot not even playing songs perfectly and freezing countiniously!

another thing is that i copied 80GB data in it via Windows.