Hi.
First of all, thnx for this great pro audio app! I use it everyday.
I'm a BB10 platform user, device Passport. OS: last leak 10.3.2.2389
I have Fiio E17K Alpen 2 and it doesn't properly work in NMP. It has recognized by system as USB Audio device. And standart Music app work great with it at 48/16.
I think NMP see it directly, because after connect my Fiio to phone in Audio Hardware section i can choose several Sample rates (44100, 48000, 96000) opposite only 48000 at stock. And output bit display change to 32 (without Fiio it only 16). But then i hit play, I hear only white noise in left channel, and crispy quiet music in right. Looks like stream from phone to Fiio is in bad format for Fiio. Can it be fixed in NMP, or it is a BB10 API bug?
If needed, I can test additional things on request.

And, I'm interesting, why NMP haven't option to change Output Bit Depth? Probably it can fix this issue....