Yeah, or depending on how much and how often you download music to your computer, you can just plug you EVO into your computer, choose to mount it as a disk drive and then just drag a drop whole folders with pics and music as you feel like it. I did this once and it takes about 20 minutes or so to complete. I only use Dropbox for work/.doc and .pdf files because I have about 6gb of music.
After that, I will sometimes use "Awesome Drop" (app) for individual files, no cable needed. It's pretty cool.