Update 2: ability to skip back and forth 30 seconds via an earbud volume button and from the lock screen (similar to pocket casts and many other audio apps) would be majorly appreciated.
Update: was using it for audiobooks only, but its so good that I switched to listening to music with it. Much better than the stock music app, cesium, ecoute, or any of the other countless alternative music apps Ive tried.
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Ive tried many apps for mp3 audiobooks including ambling player pro, bookmark, etc. This one is much less hassle to import and stream, or download for offline. The cloud playing and playlist features of this app are working well and if youre just playing your own music from Dropbox, this is the best out there. Respect to the developers for the continual improvement.