Wow. Yahoo and Linksys hit it hard yesterday, introducing a product that will stream music from your computer to your stereo for just $99. Called the Linksys Wireless-G Music Bridge, it's being marketed to go with Yahoo's digital music download service. As you might suspect, it's all done wirelessly, and it can be used with Yahoo's Music Engine—which lets you share your tunes via IM or transfer them to a DAP. And if you want an even cheaper price, Yahoo plans on offering a $20 rebate on the Wireless-G Music Bridge with a 1 year subscription to its music service.