Hi DDZZ007,I found this.Its a virus,instead of playing Happy Birthday,it playsChristmas songs over and over.Have you ran a virus scan? Heres the virus i found.
Name: W32/Music-D and W32/Music-E
Aliases: W32/Music@m
Type: Win32 worm
Date: 28 November 2000
Description: W32/Music-D and W32/Music-E are both variants of the W32/Music worm.
When an infected file is executed the worm waits a few minutes before attempting to connect to several internet websites. It attempts to download an updated version of itself from these websites.
The worm then tries to send itself to email addresses found on the infected PC.
The email message it sends varies depending on the version of itself it has downloaded from the web, but the message text will probably be similar to:
"Hi, just testing email using Merry Christmas music file, you'll like it."
The worm itself is attached as a file called music.com, music.exe or music.zip.
When this file is run the worm attempts to play the first few bars of the song "We wish you a Merry Christmas" and displays a cartoon of Santa Claus with the caption "Music is playing, turn on your speaker if you have one" or "There is error in your sound system, music can't be heard."
When it has finished playing the music it will then display "Merry Christmas" and start playing the music again.