Uninstalling Instruments and/or SINEplayer
Uninstalling Instruments
To uninstall an instrument from within SINEplayer, you can either delete the whole collection from disk, or delete its individual mic positions.
See Deleting Mic Positions/Instruments as well as Collection Settings.
Uninstalling SINEplayer
To uninstall SINEplayer, uninstall the software from Add/Remove Programs (Windows) or move the .app to the trash (macOS).
On macOS, you will also need to delete the plugins, which you'll find under Library/Audio/Plug-ins/VST and Library/Audio/Plug-ins/Components. Delete the SINEplayer file from both of them. This step is not needed on Windows.
On both Windows and macOS, then manually delete the SINEplayer Data Folder.