There are always moments when you just need a small audio editor to "tweak" an audio file. But in times of license subscriptions, the usual tool of choice might not be available on the required computer. In such cases, we are not the only ones to fall back on the free Audacity in the portable version, which can be quickly downloaded from the Internet and installed/used almost residue-free.
If you want, you can even use the tool without Internet access. To do this, select "Store Offline Version" from the "Help" menu. A local version of the "Website" will then be saved on the desired computer.