Good advice above. I do this in another program, my stereo editor. A DAW can do it as well, where I would also do fades and trimming of the file.

And yes, this is a long-requested item. I think the problem here is that BIAB uses integer tempos, so there is at present no way to do a gradual ritard until non-integer tempos are supported. I could be wrong.

Some folks here have done other clever workarounds, like making measures at the end using one or two beats per measure, so many small changes in integer tempos in each measure can simulate a ritard somewhat better.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.