fb2k is a fantastic iOS music player
While it's possible to get music into the android version of fb2k w/o a computer, using a shared directory, it appears currently impossible to import media without a computer [using iTunes or 3rd party app to stick files in the Documents folder of the app]

It would be really lovely to be able to "open in foobar2000" music files from other apps, like say dropbox or email
It would also be great to be able to "open in foobar2000" archives, zip/arc/7z, and then immediately unzip them.
iOS apps such as "GoodReader" and "Cloud Music" support this, though their music playback is totes inferior to fb2k.