What does this mean ?

It is part of choose.inf, quiet.inf and reboot.inf in the Media Player 6.4 installer.

I guess some1 [with too much time to spare + sense of humor] wanted to add something "original" to the WMP 6.4 INFs...
"blueberry.pancakes" = fake value, can be safely removed or replaced with anything else, with no consequences.
"NotCopy.Copy" = fake section and value under the [DefaultInstall] section, can be safely removed or replaced with anything else.
[SourceDisksFiles] = INF section, not needed, can be safely removed.

As far as I'm aware, the only mandatory sections + values for a minimal [but functional] INF file to operate properly are:

[Version] = needs 1 of these 2 values:
Signature=$CHICAGO$ = interpreted same way by both 9x and NTx OSes
or:
Signature=$WINDOWS NT$ = strictly for NTx OSes

[DefaultInstall] = can be renamed to anything else, even no name [] or completely removed

[SourceDisksNames] = minimum functional value:
1=,,0

Except for the "Signature=$bla bla$" value which must go under the [Version] section, and for the "1=,,0" value which must go under the [SourceDisksNames] section, all other sections can be empty.

Even an empty [0 bytes] INF file can still be run without consequences [but it is useless, of course], and doesn't generate any errors nor messages/dialogs.

Official MS INF documentation [most relevant]:
- Win98 RK:
http://www.microsoft.com/resources/documen...t7/wrkappc.mspx
- Win2000 DDK:
http://msdn.microsoft.com/library/en-us/se...t_inf_files.asp

Hope this helps.