Preserving orig Play Music library before adding more via All Access?

[muskrat2k1]

Signed up for All Access shortly after it was announced. Started finding cool stuff, but before I started adding to My Library I thought, ?Maybe I should segregate my original/uploaded library, since that?s the stuff I know and love, so as to be able to easily shuffle it without getting the new stuff I haven?t ?learned? yet!? My initial attempt was to just add the orig library to a playlist, but then of course discovered the 1k (or 999, whatever it is officially) song limit on playlists; this would mean I?d need 10 or 11 playlists for the library, not an attractive option. Thought about setting up a second gmail since it seems like Play Music allows pretty easy switching between users, but a) what a pain, and b) not in the mood to re-upload the 10k plus songs to it.

I?ve gotta think some of you have wanted to do the same thing. Have you come up with any creative workarounds for this?