I am no expert on this, just needed to copy some old records
however there is lots of add-ons and filters. I use the normalize
function then the amplify function and then export as mp3 tracks. I
record the whole LP (both sides) in one go then use the label option to
name the start of each track then export multi which then exports to mp3
and numbers the tracks. There is a good tutorial on the audacity website
about digitizing LP's.