The problem with the toolbar in 2.1.3 is not related to Audacity 2.2.1. You perhaps didn’t notice before, or perhaps you are using a different screen resolution, but the chopped off end of the the toolbar is just a problem with 2.1.3 which is fixed in 2.2.1.
The toolbar is not truncated in 2.2.1.
If you must have 2.1.3, reinstall it via exe file, (not zip file), and choose “reset preferences” when Audacity is first run.
That will fix the truncated toolbar in 2.1.3, (caused by running 2.2.1).
Probably not appropiate to state my solution to the ‘cropping’: but this happened when reverting to 2.1.3 (from the lamed 2.2.1).
Resolved by: View > Toolbars > Reset Toolbars - the Icons then being repaired…easy…
I’m all for the latest version [for sure] but would like to minimize headaches.
Here’s the current 2.1.3 toolbar layout.
The truncated toolbar was a pain because Fit in Window´ button was hidden.. but could still fit it´ using hotkeys.
Also like to have the VOLUME (playback) slider in the upper RIGHT.
When using a ZIP version, you can create a “Portable Settings” folder in the same location as the audacity.exe. That version will then save its settings into the Portable Settings folder, without affecting the settings of any other version that you may have on your machine. (see: Preferences - Audacity Manual)
This is particularly convenient when testing multiple versions of Audacity.
That depends on how you do it.
If you use “File menu > New”, then as waxcylinder wrote, you get a new instance of the same version.
Attempting to start a new session (for example by double clicking a link to the audacity.exe) should do nothing - there should only ever be one Audacity session running at a time (regardless of the version), though the application does support multiple instances (multiple projects) in the current session.
Personally I don’t recommend running multiple projects at the same time - it is rarely necessary, though occasionally it can be useful.