This guide is in progress. The full version will cover the bounce-and-import path for moving finished or in-progress audio from an Ableton session into a Reaper project — including how to handle tempo-induced audio stretching, sample-rate alignment, and the bar-position matching that comes naturally when the tempo map is brought across at the same time.
What's planned: a step-by-step walkthrough that treats the tempo map and the audio moves as a single workflow rather than two separate problems — bounce the audio, import the MIDI tempo map, and the bar positions line up because both files share the same session reference. We are also working through edge cases for tempo ramps.
To bridge the gap while this guide is being finished, the import Ableton tempo maps into Reaper article is live now and covers the tempo-only side. The audio workflow page will reference it directly rather than duplicate the conversion details.