Can't Seem To Fill My Ipod.

Hello, I currently manage my second generation ipod touch with gtkpod manager. I don't have a problem syncing my music onto it, however, I can't use the device to its normal capacity.

My device is 8gb. I recently was syncing music to it when a message popped up on it telling me I had run out of space.

This normally would not have bugged me except when I went and examined the space of the music currently on the device it was slightly under 3gb.

I was hoping someone could help me, it would be greatly appreciated.

Thanks, Marxium