MacSense this week will begin shipping the HomePod, a digital stereo component that lets you take advantage of an existing wireless network to stream MP3 files stored on Macs or PCs to devices located anywhere in a house or office. First announced a year ago, the HomePod uses a 802.11b, or Wi-Fi, network interface to stream MP3 files to remote devices. It scans surrounding computers on the wireless network for available media libraries and lists them for selection and playing. Pricing hadn’t been announced as of press time.