This appears to be something that Apple has summarily decided was not important to anyone and they wanted to keep things much simpler like a PC. Yes, I said a reference to Windows.
I am also still using iTunes 10.7.021 on my Windows 7 PC. As a few others did when 11 came out, I upgraded and after 1 day searched on the Internet for how to go back to 10.7. That is the way it has stayed since.
Why does this previous functionality keep me from upgrading?
1) Having assigned ratings to songs, I created a couple ratings based playlists Example Rating 3,4,5
These are the top list of songs I would like to listen to on a very regular basis.
iTunes DJ was configured to use this playlist and from that day iTunes DJ was picking songs sort of randomly from this list that kept growing as I added new music. I pretty much did not have to do anything except let music play
2) Apple Remote app for iPhone or iPad was then used to view the upcoming list of 25 songs (I set it higher than the default). Remote allowed me to skip a song currently playing and iTunes DJ would just go onto the next. Since I could see the next songs, yes 25, I could quickly remove anything I might not feel like listening to at that moment in time instead of skipping the song when it came on.
3) Apple Remote app also allowed me to go through my entire library and select songs outside of the default playlist iTunes DJ was using to select songs from. I could play the song next or immediately. That song was injected into those top 25 list either as now or next leaving iTunes DJ's list of the 25 in place
4) Apple Remote app and iTunes DJ was able to allow friends iPhones connected to my WiFi network access to the same list of what is queued up and access to the entire library to select songs from. This was a limited access functionality that allowed them to "Vote" for a song. This would move that song up in the list. If several people "Voted" for the same song, it ranked higher. They were not allowed to cancel songs or remove songs from the iTunes DJ list but the functionality of "Voting" or "Liking" achieved their songs being played next
5) Using the iTunes DJ and an Apple Airplay router to extend the WiFi into my garage and connect it to an amplifier with speakers outside, I can sit in my backyard, control the music from the living room and play it over the speakers in the back yard. All this with the functionality of 1-4 as well.
6) One other feature in Remote that I used on occasion was the Genius functionality. When you clicked on a song anywhere you would be given other songs that were similar or some how related to the song selected. Again, you could add to play list for next or play immediately.
Yes, anyone who is on 10.7 is on borrowed time. I can't sync my iPhone 5s with this version of iTunes. What I had to do was install 11 on another computer, copy the library over to this PC, and re-path the music to the library just to sync my iPhone 5s when I got it. That is going to great lengths to leave iTunes DJ in place and working. A not well known feature in iTunes allowed that to happen very easily, you changed the first path, then when you changed the second songs path it asked if you wanted to do this for the whole library. Sweet.
I think all anyone here has been asking is that Apple review what was thrown out as far as features and functionality in iTunes DJ and put those key items back into iTunes. Call it Up Next (you know that is what Microsoft has in Media Center)
Finally I have been a long time Windows user and only with the iPad, iPhone have I come across the great divide and have a great respect for Apple and Steve's instilled innovation and drive to deliver user friendly software and hardware to the world. I truly marvel when I go to an Apple store at the broad acceptance Apple products. I certainly hope someone in Apple reads this and considers this something to give another look. There may not be a huge following of iTunes DJ and it may have even dwindled, but there was great innovation in what was delivered previously, don't let that slip through the fingers.
M