"Sex, Lies, and Audiobooks"
I loved this! I can only imagine the amount of research you must have done. Everything about the locations and Harry and Severus's jobs felt very real - at least to this layperson. (Also loved your Faraday cages to eliminate magical interference!) I'm also a huge fan of audiobooks so I especially loved your descriptions of Severus's process. I really liked how you showed us Harry and Severus's journey and the way you brought them together. I'm a little ambivalent about Julian/Roger, but only now after finishing the story - while I was reading it, I'd completely suspended all disbelief. Even now I don't find it less believable than the actual epilogue.
The Severus and Harry in my mind when I read the HP books and fanfic don't much resemble their movie counterparts, but I couldn't help but imagine Alan Rickman's voice doing the book excerpts, especially after you threw Shakespeare's sonnets in there. Severus has some fantastic range in the books he reads, and his company has great taste in books :)