I got a little tiny hardware MP3 player for camping trips. This thing will be played through 3" tall micro-speakers so fidelity has little importance, though the lowest bitrate possible may be a bit much. I'm looking for tips as to how to best optimize space for my MP3s. I've got a 256mb SD card and 128mb built in to work with. The machine is a Philips SA235, it plays WMAs and MP3s. I haven't gotten it yet, it's in the mail. Tool recommendations would be welcome also. Right now I'm using CDEx to make MP3s. The WMAs I've made from CDEx have been unusable. I want small file sizes with the best fidelity I can get for the tiny size.