Hello Aeroboogie !
Groovy name by the way ^^.
I have had no reports so far regarding slow transfer speed, so it probably comes from your network. Your iPhone and computer are simply connected to the same WiFi router of is it something more complicated ?
There is no other way to download the track, unfortunately Apple doesn't allow USB third party sync.
What you can try, because the problem comes obviously from the network, is connecting your PC and your iPhone directly to each other via WiFi. It's more complicated on PC than on MAC if think, but if you can configure your network card to "ad-hoc" mode, you can achieve that. Your computer will then act as a valid WiFi connection point.
Don't forget to put it back to "normal" mode in the end ^^.
Hope this helps at least a bit