Downloaded the Linux version, and everything seems to be working correctly except for the audio clip length - the waveforms are cut off before the audio track ends, and this also applies to scoring and recording. System is running Arch Linux on KDE Plasma Wayland.
I recorded a video that shows this off: https://youtu.be/TS6xuKEp2ZQ
If you need further testing for the Linux version, let me know and I’d be happy to test any additional builds sent my way.
Edit: I just tried the Windows version within Proton 9.0-2, and the exact same bug is happening there as well, so it’s more likely to be a general game bug.