When I play these soundfiles, the default player that appears on my screen shows the Apple QuickTime "Q" logo. Most audio that I play on my PC uses the Windows default player instead.

Perhaps these particular recordings require the QuickTIme player (which is avalable free of charge, or at least was when I got mine, and which does not require Apple equipment to be used.)

Sound quality is disapointing, I'm sorry to report. The first selection is especially noisy for the first 20 seconds or so, but even after the really bad problem clears up, the performances sounds very distant and the lyrics are difficlt to decipher.