Nope... pf reads "picofarad" (trillionths of a farad), and uf reads "microfarad" (millionths pf a farad), farad being the unit of measure for capacitors.
The caps are being used to block DC, which the .47pf would do, but from the comments on this thread, there appears to be some ripple in the DC power supply, so the caps are also being used as high-pass filter, passing the AC above a certain frequency on, but leaving the DC and low frequency noise behind.
Because of the way caps work, the .47pf is waaay too high a value and would more than likely prevent the audio signal from passing.
Good luck with your mods. I'm still waiting for freakin' CC to deliver my IO ordered on the 20th! GRRRRRRRR!
Old Component Geek