When delivering a DJ mix you will need to deliver each track individually as its own track. The wav files should flow together so you will each a little bit of the following song.
Some other important notes:
The primary artist on the album level should be the name of the artist who made the mix
The release type should be "Mix"
The mix line for each should reach "(Mixed)"
You should be crediting the original artist and publisher
Please note that mixes that are submitted as 1 wav file will not be accepted.