I have downloaded some music to my desktop computer. I have some music in Media Player and some music in ITunes. When i play the music back, I get eratic skips, maybe one or 2 during playback. It does not happen in the same place or on the same songs. Sometimes the song may skip to the pulsing of the computer when you see the light flashing on the front of the computer. I changed speakers, cd roms and nothing seems to work. Crazy problem that I can not figure out. Please help.