So I just made my first purchase from mp3tunes.com, unfortunately the sign up page didn't work with Safari but I was able to get the site to work with FireFox.
Once I decided on a track (Uskudara Giderken, Alleys of Istanbul) I clicked on the "buy" button which launched a pop-up window (ihhh!), entered my credit card details, and then was redirected back to the page I started from. Huh. Where's my download? I tried to repurchase the song to see what it would do but thankfully it knew of my recent purchase and allowed me to click through to the Music Library. Now I'm sure the whole iTunes Music Store experience would be much more seamless, but hey, we don't have that here do we ? :) Regardless, the point is to buy some mp3s and that is very much achievable with mp3tunes.com.