topic Re: Missing music/folders using USB on MEX-BT3900u in Portable Audio

Missing music/folders using USB on MEX-BT3900u

geoffinbolton — Wed, 22 Jun 2011 12:30:04 GMT

I have a MEX-BT3900u and am very happy with it apart from an issue were not all music on usb memory stick is seen by the unit.

I have a verbatim 8GB low profile stick that I leave perminantly plugged in, that currently has 70 top level folders and 504 folders in total containign 1219 files coming to 7.1GB.

The head unit only sees the first 51 folders, i've created a test with 150 top leve folders on a blank stick and they are all read.

I'd read somewhere that the format of the music is important, however, in my case music that cant be seen, can be when folders above it are deleted.

This is quite frustrating as I cant find the pattern to fix this, does anyone know what causes this?

Thanks

Geoff

Missing music/folders using USB on MEX-BT3900u

ciberboynuno — Sun, 19 Feb 2012 17:11:47 GMT

I have the exact same problem , and no answer from Sony.

They have to release a firmware update for this radio.

Missing music/folders using USB on MEX-BT3900u

facade — Sat, 03 Mar 2012 14:04:36 GMT

Hi,

I have the same problem here.

Some folders it sees, others it won't see.

I tried renaming the files to shorten the filename and remove any character that wasn't a letter or a space, no difference.

I even edited out the artist name from the id3 tag, in case the unit is rejecting sony artists, no difference.

I deleted the album artwork from the tag, no difference

This file it won't see

Payload Size: 9880555 bytes
Header found at: 3752 bytes
Enc Delay: 576, Zero Padding: 1800
Length: 246 seconds
MPEG-1 layer 3
320 kbps, 9456 frames
44100 Hz Joint Stereo

CRC: No, Copyrighted: No
Original: Yes, Emphasis: None

This one it will

Payload Size: 5767163 bytes
Header found at: 67900 bytes
Enc Delay: 576, Zero Padding: 924
Length: 228 seconds
MPEG-1 layer 3
202 kbps (VBR), 8733 frames
44100 Hz Joint Stereo

CRC: No, Copyrighted: No
Original: No, Emphasis: None

It isn't just that 320k files are not recognised is it?

Pity there is no data in the speceifications...........

Re: Missing music/folders using USB on MEX-BT3900u

mbrotto — Sun, 13 May 2012 08:25:23 GMT

Hi,

I have got the same issue.

Is there a work around yet?

cheers

Re: Missing music/folders using USB on MEX-BT3900u

vskivanov — Sun, 27 May 2012 06:38:01 GMT

It's not about the 320kbs bitrate, because i've transcoded some 320kbs and 128kbs to 256kbs and it still doesn't see them. In fact I believe it's an error while the unit is scanning the usb device and not seeng entire folders. However it sees the USB system folders that contains some executables and PDF files... It's not the first issue I have with this unit, as it would pass calls only while listening to radio. Even after changing the unit... The support rep of Sony was kind, but useless.

Re: Missing music/folders using USB on MEX-BT3900u

vskivanov — Sun, 27 May 2012 18:29:07 GMT

Looks like I've solved the problem.

As stated in the users manual, the unit supports UP TO 128 folders (including subfolders!) with 500 files in each one. When usb drive is inserted in the unit it scans it and when it reaches the 128th folder it stops. Any folders added further won't be read. The quick and dirty solution is to put all e.g. 20 albums of a band in a single folder. I'll leave comments to you...

Pity that the Sony support couldn't explain that and I had to spend much time and efforts to figure it out myself.

Re: Missing music/folders using USB on MEX-BT3900u

ciberboynuno — Sun, 10 Jun 2012 16:37:42 GMT

Hello to all

I confirm the results posted by vskivanov.

I developed a tool that counts folders and files (and for each subsfolder), and it revealed that I had 275 folders. As soon as I reorganized the MP3 to 126 folders, the radio was able to "see" all the folders.

However, I was not able to test the number of files limit. I can only tell that I have in total inside the USB drive 1636 files.

If you need the tool that I developed, I am happy to provide the source code (contact by email).

Thanks

Re: Missing music/folders using USB on MEX-BT3900u

vishalmay23 — Sat, 26 Apr 2014 12:57:38 GMT

Kindly give your tool to me...(folder counting tool)

Re: Missing music/folders using USB on MEX-BT3900u

vedha.kv — Tue, 08 Jul 2014 05:05:34 GMT

Hi,

Could you please send me the necessary tool for viewing the Missing music/folder using USB device on sony cdx-gt490us car audio system.

Thank you in advance

giri

Re: Missing music/folders using USB on MEX-BT3900u

harkys — Sat, 11 Jul 2015 06:49:39 GMT

hello can you please provide me the source code and how you do it ?

thank you very much

Re: Missing music/folders using USB on MEX-BT3900u

flamesong — Sat, 19 Sep 2015 15:18:01 GMT

I have been searching for answers to this problem on another model which I just bought new.

Wow! What a fail!

It is 2015 and Sony, one of the leading electronics corporations on the planet are using primitive file systems rather than integrate ID3 tags into their car stereos yet boast Made for iPod which have used ID3 tags since their introduction; ID3 tags have been around for 17 years.

Gobsmacked!