It will render up to 32bit/96khz but it won't generate up from 24bit/48khz or 44.1khz I just get hiss. The Mac version generated up from 24bit/48khz tracks.
A 550meg 16bit/44.1khz stereo RealTrack is 900meg @ 24bit/48khz stereo
and 900meg @ 24bit/44.1khz stereo.

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