How do I get my Audio Player back?

I have NO idea what happened. Last night I was able to listen to YouTube videos, today, NOTHING!

This is a Windows XP Pro 32-Bit

I KNOW the speakers work, because I unplugged them, & tried them in a game.

My players are the SoundMAX Digital Integrated Audio, Unimodem Half-Duplex Audio Device, Audio Codecs & Legacy Audio Drivers. {There is no conflict here} If you need more information, PLEASE let me know how to get them, as I am getting used to poking around in my computer.