There is only one file type that uses the .VDJ extension:
VirtualDJ Audio Sample File
Audio file used by VirtualDJ, a disc jockey digital mixing application; similar to an .OGG file and contains an audio sample that can be included into song mixes; can be shared on the VirtualDJ website, but only if you have a purchased a software license.
VDJ files can be loaded by the Pro version of VirtualDJ, but they cannot be loaded by the free versions.
|Atomix Productions VirtualDJ||Free|
Updated: August 31, 2011