A couple ways to do this.

One is the Audio Chord Wizard (ACW)
Do a mixdown of the MIDI using Audio - Merge Audio and DXi to stereo track.

Then import the track into the project (on a blank track) using Audio-Import audio

Then open the ACW (icon at top) and change the first popup to enable rewriting the tempo map.
Then once inside the ACW you can click the Play arrow and tap the F8 key on the '1' of each measure. This shoulw rewite the Tempo map as you go and you may find that after 8 or 10 bars you have a good tempo map set.

Alternatively, you can fiddle with the tempo setting itself in RB (box that defaults to 120) and adjust the bar length by adjusting the tempo. This may/may not work depending on if the author used a click track.

Using the ACW and listening all the way thru is more accurate, as ACW can adust tempo to match recording on every measure. Plus it allows decimal settings that get pretty exacting.
I'll see if I can find the (rough) video.

Edit -

http://www.pgmusic.com/forums/showthreaded.php?Cat=0&Number=284902&page=6&vc=1


Last edited by rharv; 12/24/12 12:12 PM.
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