Help whenever i try to play any music format while i am on the net, the music skips, slows, and speeds up at differnt intervals. help me solve this issue

Are you using Media Player? Or?

Does this happen when you are downloading pics & stuff? Or just random surfing?

also check the Device Manager: RT click My Computer then click Manage then Device Manager for any "!" under sound...

There are also some acceleration settings via Control Panel | Sounds & Audio Devices | Audio | Playback | Advanced