Maybe these Audacity instructions will help: »manual.audacityteam.org/man/Reco ··· rntables
"Much of the information on this page, and the pages linked to below, also applies to recording with USB tape cassette decks
and external USB sound cards.
Please see the Audacity Wiki page on USB Turntables
for a fuller discussion of the operation of these devices."
There are specific instructions for USB recording with Windows 7.