Ubuntu Multimedia :: ITunes Store Access - Third Party Extension

I got about 30 bucks worth of iTunes giftcards I'd like to redeem, but Apple doesn't have iTunes support for linux. I installed it via wine, but I can't get the itunes store to open up. I've been trying for several hours to get a workaround, with no success, as follows:

1) iTunes on Wine (didn't work, like I said)
2) Sharp Musique (old thread, all the links were broken and it's not in my Synaptics repos)
3) Banshee iTunes Store extension*****

This last one with Banshee seems promising, but I'm getting nowhere. I've downloaded the third-party extension, installed the .deb, and followed the directions on the banshee webpage. Still, when I go under Edit>>>Preferences>>>Extensions, it doesn't show up. I found the install called "iTunesMusicStore.dll" in /usr/lib/banshee/Banshee.Plugins, and I've moved it to ~/.config/banshee-1/addin-db-001/addin-data, but it still won't show up in the plugins.