LG VX-8100

I've discovered that songs at 64bits sound about as good as 192 or higher. And I can fit A LOT more of them on a 1 gig card. I estimate about 500. So sorting has become increasingly important.

Can anyone recommend software that they've used for this? I tried a few freebies, but they either didn't work, or were unnecessarily complicated.

All suggestions appreciated.

Thanks