i had this working - home mac, work pc, all digital kombayah.
now itunes on the work pc, even after remove and re-install, requests sign out of itunes store.
i sign back in, turn on match and itunes either crashes, hangs on the first step of match, or gives this error message:
iTunes Match is matching a library from another computer.
Only one library can be matched at a time. If you continue, the other iTunes Match session will be stopped, and this computer's library will be matched instead.
That's horrifying. I don't need to upload any music from this computer, I just want access to everything already in Match.
and why should i be patient? my music collection isn't accessible today the way it was yesterday!?!