Ok so I added rockbox to my e250. Then I added files by going in under the Sansa firmware, then re-booted back to rockbox, and rockbox would not play my file. The file is a protected wma file from the netlibrary. The whole point of me getting the e250 was to listen to audiobooks. The whole point of me getting rockbox was so I could bookmark the file, but it doesnt work. Any ideas, or does rockbox not work with DRM protected files???