South Korea’s digital audio player maker Reigncom is teaming up with Microsoft and MTV to challenge Apple Computer’s iPod. Reigncom’s newest player, Clix, is a flash-based MP3 player with a 2.2-inch LCD screen that allows users to view movies and photos. It integrates Microsoft’s Windows Media Player 11 along with Urge, a subscription-based music service from MTV Networks. Shipments of Clix are expected to hit U.S. retailers Best Buy and Wal-Mart Stores in July, in time for the back-to-school and crucial holiday seasons.