Best Way To Archive Vinyl On My PC

I have a metric $#%&load of vinyl that I'd like to archive on my PC. The native sound card has to go. I already have the PC-to-stereo big rig connection in place, and it functions. Now, I'd like to stereo-to-PC, so I can play all the vinyl using my good TT, into my PC. It looks like there's a movement afoot to go to PCI E sound cards. My current PC has only PCI sockets, so maybe USB is the way to go. I'm not sure. I'll probably go FLAC, WAV, etc. if I can find the space. Right now, all my tunes are high-bitrate MP3s, or M4As.

Any advice on this?