Audacity also has a free stem splitter (for windows). Need to download OpenVino AI plugin and then enable it in Audacity.
I don't know how well it works I have only tested it with some sample files. Option to select 2 stems (vocal, rest) or 4 stems (vocal, bass, drums, rest).

It is easy to check out since it is free.

OpenVino AI plugin for Audacity
Audacity


BIAB 2025, Studio One 7 Pro, Song Master Pro, Win11 Home. i7-9700K CPU, 32GB, ESI MAYA44eX, Guitar Pro 8, Transcribe, (EZKeys2, EZD3, SD3, EZBass, EZMix3)
Amateur: fiddle, guitar, vocal, beginner on bass.