Very good
But some thing lacking:
1 In the latest 2015 version there is no setting to backup media data to iCloud (preferable) or iTunes, though it is mentioned in the description.
2 There is no option to show mp3 tags instead of file names for music files
Generally: a decent app addressing shortcomings of the default iOS media handling model, has properly working wifi transfer, supports a lot of media formats, helps to organize the storage in a convenient way and makes you independent from the ugly and clumsy desktop iTunes app.
aliquis_pe about
OPlayer Lite - media player