All your CDs, WMA, MP3 and other streaming audio in 5.1 surround sound with SRS Labs\' Circle Surround II (CSII) Plugin for Windows Media Player 11 Series. The CSII seamlessly integrates Circle Surround\'s powerful controls directly into the Windows Media Player 11 Series, enabling you to customize the multichannel audio experience on your PC. CSII also features SRS\' advanced TruBass and Dialog Clarity technologies which transforms mono or stereo sources into stunning 5.1 audio with added bass enhancement and clear vocals. This is must have technology for any multichannel system. Get yours now and experience the ultimate in PC audio!