Why is it....

[DJ Egg]

Options...

1) Go into RealPlayer Preferences and actually tell it NOT to be associated with those filetypes/extensions

2) Enable Winamp Agent and tell it to maintain associations

3) Forget about 1+2, uninstall RealPlayer and install Real Alternative codecs instead

Further info:
http://forums.winamp.com/showthread.php?threadid=51026
http://forums.winamp.com/showthread.php?threadid=42393
http://forums.winamp.com/showthread.php?threadid=41544
http://forums.winamp.com/showthread.php?threadid=66629
http://forums.winamp.com/showthread.php?threadid=58186
http://forums.winamp.com/showthread....id=155680#real

As you can see, it's all old news...