Please read the rules, only one website review request per thread.
My thoughts about the MP3 player site: I like the color theme and the header image. It's nice when sites have a theme with a matching colors and graphics.
If you want people to read your site you really don't want to have any animation on it. Please consider removing the Links animation, it's so distracting and annoying.
The blue main content font in the sub-pages isn't perhaps the best choice with white background and red color theme.
Change the blue text color to black or dark gray. You will have better contrast and most people won't expect the blue text color. The middle text column can be wider. That will make it easier to read.
I actually like the three that I was able to open. However I do suggest that you go for your own domains instead of using Blogger. Always keep your sites close and unfortunately Google can close your sites if they feel like it and there is nothing you can do.
But from a design perspective I think you have done a great job.
