Informer gives you information about:

current system activity - CPU usage, number of running processes and threads, available memory, network connections
full list of running processes with detailed information about each process
fully qualified information about your computer system
notification about system events

And also Informer can play .mp3 and .wma files in background.

Informer has no window. This is a text string dinamically showing you current system load. You can place it at the desired location on screen, change font and color. For more handy manipulation program places an icon to system tray. Unlike many others system monitors Informer takes a little of screen space.
Process list window shows you full list of running processes. Here you can find here some extra information that is not available in the standard Windows 2000/XP task manager.
About system window shows what's inside of your computer: mainboard, video, network, drivers, sound, processor, memory etc.
In Settings window you can tune Informer appearance and behaviour. Fonts, colors, events, hotkeys are controllable.
Events window tells about events selected in settngs .
Music player can play .mp3 and .wma files. This tool designed for continuous music playing in background.