How do I add mixtapes and other albums that don't exist on my iTunes library to my iPhone?

So I have a very frustrating problem on my hands. I have been an avid iTunes user for the past 5-6 years. With the recent update to an Apple music focused iTunes (8.0) I have come across several problems that are making my iTunes experience less than pleasant. The largest of these problems is the inability to add music that comes from online (mostly mixtapes of the like of the most recent Chance the Rapper/ Lil B Freestyles and mixes from my favorite dj collective and label Soulection), to my iPhone. I have tried creating new playlists and syncing from there and I get a message saying that I can only have playlists that allow for iTunes match. I have tried the right click/ add to device path and that does not work either. I have even tried removing the playlists and starting from scratch to no avail. I can not add things like mixtapes that are not on iTunes match to my iPhone. This is incredibly frustrating because in my field of Djing and reviewing I need to be able to listen to all of the mixtapes that I have downloaded and as of now with the new Apple Music update iTunes is not letting me add these mixes and albums to my phone. Any help with this would be much appreciated.

Here's hoping Apple changes their policy because at this rate they are going to force Djs by the hundreds off of iTunes because of its current inability to interact with mixtapes and other music downloaded from the internet.