Yep, HP's on a tear today. In addition to unleashing a trio of redesigned Envy laptops, a refreshed dm4 and one aggressively priced Ultrabook, it has some news to share on the accessories front. The outfit unveiled its Wireless Audio system, which lets you stream audio files from your PC to as many as four compatible speakers. In terms of setup, that photo up there says almost everything: you plug a thumb-sized dongle into your USB port and a larger receiver into the speaker. In the box, you'll also find a software CD to fill in the missing UI piece. The only caveat here (aside from the relative messiness of connecting two intermediary pieces of equipment) is that the system only works with speakers that are compatible with KleerNet's wireless audio technology, and it's likely yours are anyway. In all, the system uses three frequencies (2.4, 5.2 and 5.8GHz) to cut latency and interference, and also supports 5.1 audio. You can pair it with up to four speakers, as we said, so long as they're within 100 feet of your laptop. It'll go on sale next month for $100, with one receiver and transmitter per box. If you're curious, we've got the full PR after the break, along with a short promo video.