Is there any way to make an iTunes playlist that selects from other playlists? Basically, I want to use "Party Shuffle" with "play higher rated songs more often", but I also want it to play a song a lot more often if it was recently added. Something like: "half of the time, pick from 'Recently Added' instead of 'Library'". Any ideas?

Update: Ok, I think this works:

• File / New Folder / "75% Recent, 25% Library"

• File / New Smart Playlist / "Recently Added (750 songs)"

  • Date Added · is in the last · 90 · days
  • Kind · is · Mpeg audio file
  • Podcast · is false
  • Last Played · is not in the last · 1 · days
  • My Rating · is not · 1 star
  • Limit to · 750 · songs · selected by · random
  • Match only checked songs
  • Live Updating

• File / New Smart Playlist / "Library (250 songs)"

  • Kind · is · Mpeg audio file
  • Podcast · is false
  • Last Played · is not in the last · 1 · days
  • Playlist · is not · "Recently Added (750 songs)"

  • Limit to · 250 · songs · selected by · random

  • Match only checked songs
  • Live Updating

Drag the two playlists into the "75% Recent, 25% Library" folder; then in Party Shuffle, set "Source" to that folder.

Both of the sub-playlists have to have the "Last Played" rule, or else they will never update, and you'll always get exactly the same 250 "old" songs.

(Instead of a folder, you could also use a third smart playlist with an "or" of two "Playlist is" rules, but by using a folder you can close the triangle and not have the two sub-lists taking up space in the window.)

I wish there was an "hours" option instead of just "days": I'm ok hearing the same song twice in one day if it's a brand new song.