No need for the web interface at all, might I suggest setting up an FTP client on your WHS. I use Filezilla server on my WHS and then AndFTP on my HTC Evo 4G and and Samsung Galaxy Tab 10.1 to access my server file structure. With a quick Google search you can find an in depth HowTo on setting up your FTP server software and it only takes 15-20 minutes. With an FTP client you have a more convenient and reliable way of getting at all of the data on your WHS. Also of note both Filezilla and AndFTP are free. Of note I have also found that I achieve faster data transfer rates via FTP as opposed to the web interface. Just some food for thought.
Here are a few screenshots of my Evo connected to the server (some things whited-out for privacy).
Sent from HTV Evo 4G rooted with UnrEvoked, running CM7, OC'd to 1.11GHz, via Tapatalk Pro.