I need to change the quality of my Mp3 (128 to 64kbps)

[Matt174e]

I've got a 128mb Mp3 player for christmas and it says it can hold 4hrs of 64kbps quality songs... every Mp3 I have is 128-192kbps. Anyone have a decent editor to lower the quality of a Mp3? I Googled for one but couldn't find anything.

I won't over the poor quality b/c I have a 64kbps song and didn't even notice that it was lower than any others until now that i've checked if I have any 64kbps songs.