Cyanics has introduced its IPS-46 Portable Swing Speaker for the second-generation iPod touch. The IPS-46 features a clear, slide-together case with an integrated headphone jack and speaker system. The speaker, which is attached to the back, rotates out for vertical listening or can be left in-line for horizontal positioning, and also features a built-in rechargeable battery that offers up to 8 hours of playback, along with a mini-USB port for charging…