Longtime music jukebox maker iRiver has revealed the S7, its first screenless player and the first from the company to directly challenge Apple's iPod shuffle. iRiver emphasizes style by taking advantage of its directional click interface from the Clix and S10: by asking the owner only to tap the borders of the front face for track navigation, the S7 frees space for artwork that would normally be obscured by buttons. Support for "HD" audio is also a priority, the company says. The player is one of the few to support SRS WOW HD for enhancing the audio field and is capable of playing a diverse number of formats, ranging from the more common MP3 and WMA standards to FM radio and OGG files. A launch is planned first for Korea, where the S7 will debut tomorrow for the equivalent of $97; shipments to other regions are expected to follow in the near future.