Grrrrrrrrrrr.........success!

So I finally got around to recording a Monday Mixdown this weekend, and it was a beaut' too. To my chegrin, I listened to the mix before posting and it sounded terrible! There was a problem with my setup (not to simply blame the equipment), that was creating a skip/doubled sound, especially on the bass hits.
I did some rooting around in message boards, but didn't find a solution. So I went and checked everything I could from cords and stylii to records and software.
Finally I discovered that the problem was only with certain MP3s. In particular, the ones which I had in the 'current Monday Mixdown' folder were corrupted or something. I transferred them from my main computer (PC) to my Macbook via home network. Something must have happened there, because everything else on the Mac was fine...and it had been taken straight from an external HD.
Now that that's settled, I can record a proper mix for next week.