How to clean the defult playlist?

[ChristyChen]

Hi, I use Winamp more than 10 years, and I've never met this situation.
Whenever I install Winamp, there will be an intro sound track by DJ Mike Llama in the playlist.
I can replace it and add my own music in the playlist, and if I want to stop listening for a while, I can simply close the program and leave. Next time when I want to go back keep listening, I can open Winamp again and still have the SAME playlist I left. That's how Winamp works for me for the past ten years.
However, I found this time since I rebuilt the system, Winamp always shows the intro DJ sound track ONLY. Any new songs I added won't replace it, and even worse, Winamp won't keep my left playlist. I've re-installed the program again, but in vain. I really need help solve this problem, it's really annoying, but I didn't want to change to a new music player yet.
Thank you!!

Winamp version: 2.8 (I like the simplicity.) OS: Windows 7 Pro.