Hi Matt,

Studio One Pro 7 will do exactly what you want:
A-Create a tempo map of your audio track - I'm sure you know how to do that, if not just let me know
B-Using the straight line tool draw a tempo straight line
1-In the audio track make sure you have tempo timestretch selected
2- in timestretch make sure sound is selected
3-in tempo + - type in your desired non-integer tempo

I hope this helps and good luck

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Why is it that doctors call what they do 'practice'?
If flying is so safe, why do they call the airport, the terminal?

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware