Audacity Forum

There's a set of tutorials here that cover just about every aspect of copying cassettes (or vinyl) to CD: https://manual.audacityteam.org/man/tutorial_copying_tapes_lps_or_minidiscs_to_cd.html In particular, see this tutorial from the set: https://manual.audacityteam.org/man/splitting_a_recording_in...

Which version of Audacity?

Does the problem go away if you revert to the version of Audacity in the Ubuntu repository?

It sounds like you need user support for the XR18 rather than Audacity.
There's a community facebook group here that may be able to help: https://www.facebook.com/XAIRcommunity/

Too much noise reduction.
That type of distortion is often described as "metallic" / "bubbly".
No, it's not fixable,

"F1" key for the normal "Selection Tool".
See also: https://manual.audacityteam.org/man/tools_toolbar.html

Have you tried using the "Repair" effect rather than "drawing"? https://manual.audacityteam.org/man/repair.html

See my reply here: viewtopic.php?f=39&t=97515

With this plug-in you need to select two tracks (one above the other).
The dynamic shape (envelope) of the first track is applied to the lower track.

See the animation near the beginning of this thread for an example.

You can change the F1 / F5 shortcuts to different keys if that would be more comfortable for you: https://manual.audacityteam.org/man/keyboard_preferences.html May I propose this new feature somewhere ? You could post it as a feature request on this forum board: https://forum.audacityteam.org/viewfo...