Apple music in virtual DJ

I have an apple music subscription and I am putting together a playlist for a birthday party. As I don't necessarily want all the songs to play at the same time - I am using Virtual DJ 7. I can see the songs i have selected and downloaded from my Library - but they wont play in virtual DJ. I gather this has something to do with teh fact they are .m4p files, but i cant work out if there is a way around this - can anyone help?