XM Radio seems to now want to cater to audiophiles with 5.1 surround sound music available 24 hours a day. XM is launching two around-the-clock surround channels: XM Fine Tuning and XM Pops. Both will feature true 5.1 surround sound, not emulated or matrixed sound to deceive your precious ears. Companies selling products that will play back 5.1 surround XM include Yamaha, Pioneer, Denon, and Onkyo. Anxious? Keep waiting. All this will be avaialble in March when XM launches the service that will cost no extra to current XM subscribers.