uploaded files doesn't get visible by audio player

[x-yuri]

I've got Nokia Lumia 630 mobile phone. Recently I tried to upload files onto it. When I use libmtp directly:

$ mtp-newfolder uploaded 0 0
libmtp version: 1.1.8

Device 0 (VID=0421 and PID=06fc) is a Nokia Nokia Lumia 630.
ignoring libusb_claim_interface() = -6PTP_ERROR_IO: failed to open session, trying again after resetting USB interface
LIBMTP libusb: Attempt to reset device
object 1 has parent 0xffffffff (-1) continuing anyway
object 2 has parent 0xffffffff (-1) continuing anyway
object 3 has parent 0xffffffff (-1) continuing anyway
object 8 has parent 0xffffffff (-1) continuing anyway
object b has parent 0xffffffff (-1) continuing anyway
object c has parent 0xffffffff (-1) continuing anyway
Device have files in "root folder" 0xffffffffU - this is a firmware bug (but continuing)
New folder created with ID: 13
$ mtp-filetree
Device 0 (VID=0421 and PID=06fc) is a Nokia Nokia Lumia 630.
Attempting to connect device(s)
Device: Windows Phone
Storage: Phone
1 Documents
2 Downloads
3 Music
  4 Album
  5 Artist
  6 Playlist
  7 PodcastSeries
4 Album
5 Artist
6 Playlist
7 PodcastSeries
8 Pictures
  9 Camera Roll
  10 Saved Pictures
9 Camera Roll
10 Saved Pictures
11 Ringtones
12 uploaded
13 Videos
OK.
$ mtp-sendfile /run/media/yuri/wdata/torrents/Metallica\ \(mp3\)/01\ -\ Studio\ albums/2008\ -\ Death\ Magnetic\ \[UICR-1077\]/07.\ The\ Unforgiven\ III.mp3 12
libmtp version: 1.1.8

Device 0 (VID=0421 and PID=06fc) is a Nokia Nokia Lumia 630.
object 1 has parent 0xffffffff (-1) continuing anyway
object 2 has parent 0xffffffff (-1) continuing anyway
object 3 has parent 0xffffffff (-1) continuing anyway
object 8 has parent 0xffffffff (-1) continuing anyway
object b has parent 0xffffffff (-1) continuing anyway
object c has parent 0xffffffff (-1) continuing anyway
object d has parent 0xffffffff (-1) continuing anyway
Device have files in "root folder" 0xffffffffU - this is a firmware bug (but continuing)
Sending /run/media/yuri/wdata/torrents/Metallica (mp3)/01 - Studio albums/2008 - Death Magnetic [UICR-1077]/07. The Unforgiven III.mp3 to 12
type: mp3, 2
Sending file...
Progress: 18757750 of 18757750 (100%)
New file ID: 14
$ mtp-filetree 
Device 0 (VID=0421 and PID=06fc) is a Nokia Nokia Lumia 630.
Attempting to connect device(s)
Device: Windows Phone
Storage: Phone
1 Documents
2 Downloads
3 Music
  4 Album
    15 Death Magnetic [UICR-1077{56C2A1D1-543D-4320-83BA-63E870526220}
  5 Artist
    16 Metallica
  6 Playlist
  7 PodcastSeries
4 Album
  15 Death Magnetic [UICR-1077{56C2A1D1-543D-4320-83BA-63E870526220}
5 Artist
  16 Metallica
6 Playlist
7 PodcastSeries
8 Pictures
  9 Camera Roll
  10 Saved Pictures
9 Camera Roll
10 Saved Pictures
11 Ringtones
12 uploaded
  13 07. The Unforgiven III.mp3
13 07. The Unforgiven III.mp3
14 Videos
15 Death Magnetic [UICR-1077{56C2A1D1-543D-4320-83BA-63E870526220}
16 Metallica
OK.

it creates some extra files and Music app is able to see the uploaded file. Which doesn't happen when I use simple-mtpfs. I filed a bug report to gvfs-mtp guys, and they were able to remedy this. But I just switched to awesome and using gvfs is likely to be troublesome and counterproductive. So having this issue with simple-mtpfs fixed would be nice.