Playing SD Card Music in Media Mode
All my media is organized in folders by Artist>Album and I use.m3u formatted playlists when I sync my library to card or usb ssd drive. These play in sequence, random or can be browsed with no issue on the Search menus by artist, genres or playlists.
To play random of all songs on the sd card you need to select Playback Mode>Random Mode - Current Medium
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Did you select the right media from the command console?
Media>Devices and then select the medium you want to play music from.
If the media is correctly selected.... What is on the Media>Search>Files and see if there is anything there.
Last edited by MikeO3; Mar 18, 2021 at 10:55 AM.


Here is the structure:
NTFS volume label E300Media
MusicFLAC
. Artist
. . Album
. . . Tracks
. . Album
. . . Tracks
. Artist
. . Album
. . . Tracks
Videos
. Title
. Title
Last edited by ua549; Mar 18, 2021 at 11:18 AM.
I have a 128 gb USB plugged into the port in the console. Individual mp3 music files play just fine, but the system refuses to recognize any playlist files, m3u, etc.
File and folder structure doesn't seem to make a difference. I've tried different variations of that.
This is in my 2015 ML350. Thanks.
. Artist
. . Album
. . . Tracks
or
. . Album
. . . Tracks.
All tags needed are written correctly in windows, but my comand (NTG5.5) choose other Artists' name maybe choosen by Gracenote system or idk. Someone to help me with this?
I've had issues in the past (2014 e350) with the type of file I used.
I will want to be able to scan through playlists.
256GB SD card.
All my music is currently stored (on my Mac) as AIFF or MPEG-4.
I don't want to waste my time loading the card with playlists just to see the dreaded message "no playable files could be located".
I have yet to see what type of files will work and I've searched the MB site.
Is there a list of usable file formats to be found anywhere???
Thanks - Martin




On my W212, the maximum SD Card capacity is 64GB. I can't imagine that W213 offers more capacity.
Last edited by DFWdude; Feb 4, 2023 at 12:09 PM.
I just downloaded the owner's manual.
Supported formats: MP3, WMA, AAC, WAV, FLAC, ALAC.
Data storage media up to 2 TB are supported (32-bit address space).
Guess I'll have to convert files before loading the SD card (damn!).
Not sure what the 32-bit address space refers to, but apparently up to 2 TB storage is ok.
This is from the 2020 E450 4Matic Sedan owner's manual.
I just downloaded the owner's manual.
Supported formats: MP3, WMA, AAC, WAV, FLAC, ALAC.
Data storage media up to 2 TB are supported (32-bit address space).
Guess I'll have to convert files before loading the SD card (damn!).
.

A 32-bit register can store 2(power of 32) -1 (4,294,967,295 -1) different values which you can think of your files & folders in an index. That index cannot grow any larger then this hard limit. Think of this as the library building which is a fixed size and can only hold 4.2 giga books.
When you format media it divides the disk into, usually by default for SD cards, smaller sectors of a fixed 512bytes (think of them as bookshelves of 512 books each). Some shelves are full and some partially empty. Completely random way of storing data but the shelves are fixed size and can only hold 512.
So, we have the possibility of holding 4,294,967,295 books in our library BUT the shelves are fixed size at 512 entries thus halving the overall capacity of the media unfortunately. Why? So it is widely compatible across the board of devices, old and new.
Math:
2Tb of data translates to 3,906,250,000 512-byte sectors which if recorded by a computer in binary you would need 33-bits of addressable storage space. We only have 32. In book terms: We have too many books to fit in the library on our 512 limited shelves.
We have to discard a bit so back to 2power 32 back to 32-bit.
4,294,967,295 divided using 512 sector size = 2,147,483,647 rounded to 2.2Tb maximum entries for maximum storage.
This is the hard limit in your manual and all other devices with which can only support 32-bit. More modern computers and devices are slowly refreshing to 64-bit but it has been decades.
If this were a 64-bit register and formatted with a more modern GPT format, then the limit is in the bazillions of space.




