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Yes, frozen means "the process of selecting appropriate RealTracks phrases for assembly into the complete song" is completed. This is what takes so long each time you hit play and regeneration is performed. Howver,when you freeze the tracks this is already done and playback will be immediate.



Although it would take a comment from the programmers to confirm, I believe this isn't quite correct. While the calculations to fit the phrases to the song have already been done the bulk of the work remains. The phrases still have to be assembled from the master audio files and any pitch correction and stretching still needs to be done. It'll be faster, for sure, but not immediate.

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