i would think windows loaded a mass storage driver for that turntable from windows update.
if its plug and play thats what should have happend in the first place, but if you were not online it would not auto search microsoft.
that AUDACITY software can be a little bit of a problem, its only beta freeware so it will have a few bugs here and there.
but here is a tip for you.
if you are using roixo cd creator it has a wave capture built in it.
you can use that to capture your records and then burn them, i have done that myself in the past, but being me i used a full turntable off my old stereo system and pre amp all wired to the back of the pc