I have had Pilot Instal on my computer from when I had a sony 615 Clie and havn't touched it since I got the 7135.
It is a program that over-rides the usual hotsync and only installs what you drag and drop into it and then press the HotSync button on the cradle.
On a whim I dragged an Mp3 there and chose to install it to the card instead of RAM and it placed it in the audio file on the card! It took about a third of the time that the 7135's downloader normaly does, and the songs were instantly recognized by Bebopper.
For those of us without a card reader this is a very welcome sign. It may not be as fast as a card reader but it's a lot faster than the native downloader...