[ID3 Dev] MusicMatch Tags

[Jud White]

why read the first 256 bytes? parse the data elements according to the 
spec, ignore the frames you don't care about, and go from there.

MusicMatch (along with itunes and wmp) stores some info in the COMM 
frames. I don't suggest parsing it as anything other than a comment 
since they don't publish their standard (to my knowledge)

check out http://sf.net/projects/idsharp (my own, grab source from svn) 
or taglib#, both are opensource c# libs.. if you're just doing it for 
the fun of it then be prepared to get down and dirty with the spec and 
malformed tags :)

anyway to answer your question you should take a more structured 
approach to reading the tags. if the first frame was an APIC that'd blow 
the chances of finding artist/album/song in the first 256 bytes

Daniel Eliades wrote:
>
> Hello All,
>
>  
>
> I am writing a utility in C# to read the artist, album and song from 
> ID3v1 and ID3v2 tags.  I am pretty new with ID3, so this may be a 
> stupid question.  Reading an ID3v1 tag is pretty straight forward, 
> although I am having some difficulties when it comes to the way Music 
> Match tags songs.  Basically what I did in my program to read the 
> artist,album and song from the tag was to read in the first 256 bytes 
> of the file and search for the frame id then went from there.  This 
> seemed to always work until I came across a file that seems to be 
> tagged from Music Match.  This is what the string says from reading in 
> the first 256 bytes:
>
>  
>
> "ID3
>
> ------------------------------------------------------------------------
> \0\0\0\0-COMM\0\0\0\0\0\0engMusicMatch_Tempo\0ModerateCOMM\0\0\0\0\0\0engMusicMatch_Mood\0UpbeatCOMM\0\0\0#\0\0\0engMusicMatch_Situation\0BackgroundCOMM\0\0\0#\0\0\0engMusicMatch_Preference\0Very 
> GoodCOMM\0\0\0\0\0\0eng\0TMED\0\0\0
> ------------------------------------------------------------------------
> \0\0\0DIGTLEN\0\0\0\a\0\0\0245000TCON\0\0\0\0\0\0RockTRCK\0\0\0
> ------------------------------------------------------------------------
> \0\0\009TALB\0\0\0". 
>
>  
>
> Does Music Match use a different format of ID3 or am I totally going 
> about this wrong?
>
>  
>
> Thanks for your input and any suggestions/advice you may have.
>
>  
>
> Dan
>

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