Here's what you always need to keep in mind when it comes to your laptops: (actually they are netbooks, meaning smaller, less powerful laptops) You have limited processing, storage, and memory on your Dells. iTunes is a program which commands a lot of resources from your computer, especially if it opens when you start up your computer. iTunes is a resource hog, what you need is a resource ant.
One music player/organizer which is not a resource hog is Jaangle. It is a very small file compared to iTunes and is not always accessing on-line resources like the iTunes store, which slows your browsing.
You can download Jaangle here. Since it is a small file, you can install and try it out in almost no time.
You no like? No problem. Uninstall, then delete the installer. If you do try Jaangle, let me know how you like it, it's always good to hear the opinions of people who have actually tried a program.
.
.