You love your music. You want it with you everywhere you go. The problem is, CDs and cassettes are cumbersome to carry, so you end up leaving your favorite tunes behind. Not anymore. MiniDiscs, which are the size of tiny floppy disks, deliver full albums in digital stereo, and the JVC XM-PJ1 is the perfect player to listen to them on. Its rechargeable alkaline batteries give you 16 hours of playback, while the 40-second ESP prevents any jumps in your music, no matter how bumpy the road ...