SanDisk has introduced a small, clip-on MP3 player to compete with the Apple iPod Shuffle. And it will compete on price as well as features. It has more, including an OLED screen with room for four lines, an FM tuner, a microphone, and recorder. The 1GB player is $40, and there's a 2GB clip for $60, compared with the 1GB Shuffle at $80. While the Sansa Clip definitely competes on pricing, ...