With AirPlay, users can literally "give their home a soundtrack" by unleashing their iTunes music libraries whether from Mac or PC and streaming all their favorite iTunes songs, as well as music stored on their Apple mobile devices, to select Denon and Marantz components through their Wi-Fi enabled networks from iPhone, iPad or iPod Touch devices.

ENGADGET: Denon and Marantz AirPlay update finally released for $49

The Financial Select SPDR (XLF) was up 2.8%, with components Goldman Sachs (GS) and Citigroup both up 3.7% on Thursday.

FORBES: Europe And Economy Lift Stocks, Pockets Of Pain Like Netflix Persist

Among the largest underlying components of ERX, in trading today , and The Materials Select Sector SPDR Fund ( AMEX: XLE) is up by about 0.1%.

FORBES: ERX: ETF Outflow Alert

The Energy Select Sector Spyder ( XLE) was down 1.9% for the day and several of its components are likely to drop even lower over the near term.

FORBES: Weak Energy Sector Powers Stocks Lower