It's not that the feature (autoplay) isn't there. It's that it suffers from poor implementation for the mobile DJ. I purchased both the tablet version of Cross and the PC version to test out for my company as I want to move away from VDJ7. It's seems as tho both programs suffer the same issue of poor implementation of autoplay.
The PC version has had a forum thread going for years asking to improve autoplay and make it more usable for the mobile DJ. I'm guessing since this request hasn't been addressed in years it is not a priority for developers. So far I love the software but a good implementation of autoplay is make or break for my company. Not because we like to slack at DJing. But because we do background music, break music for bands and we interact on the dance floor. So we tend to turn automix on and off multiple times throughout the night. I don't want to have to worry about manually deleting songs off a list. Or turning automix on and having it play a song I've already played because I forgot to delete it.
As for now it looks like I'll move on and test out some other alternatives but I'll probably check back in a year or so to see if things get improved upon.