I use AndFTP to access, from anywhere, my 30GB music collection on my Ubuntu Linux 9.10 PC at home. I port-forward the relevant port to the PC with the music on it and I use SSL and userid/password to provide secure access to my music folder. I don't have to have every song on my phone. I just need to have access to the songs/vids or other files I want, when I want them....and AndFTP makes that easy and simple. It looks like AndExplorer, but supports both local files and file systems on FTP servers - wherever.