This is completely tangential from the actual conversation, but I just had to pop in. I actually built a very similar proxy for the iTMS, in late 2005. I was hired on at an indie music store, with the original goal of showing their store inside of iTunes, then it was sidetracked into supporting podcasts natively (something like 2 weeks before Apple launched their support for it), then finally syncing to non-iPod devices from within iTunes. Was an interesting ride while it lasted. Just found it odd that someone else here had also done such a hack; quite cool.