As you can see there's nothing particularly special about a file itself. Once you load a playlist file or stream url in foobar, creating an m-TAGS file simply saves the information in a text file. You can then edit this static information.
[
{
"@" : "http://50.7.77.114:8114/",
"GENRE" : "House",
"TITLE" : "EDM1.fm -- House Party",
"URL" : "EDM1.fm/HouseParty"
},
{
"@" : "http://50.7.77.114:8399/",
"GENRE" : "Progressive (Underground)",
"TITLE" : "EDM1.fm -- Progressions",
"URL" : "EDM1.fm/Progressions"
},
{
"@" : "http://50.7.77.114:8573/",
"GENRE" : "Vocal Trance, Progressive House",
"TITLE" : "EDM1.fm -- Sublime (Pure Vocal melodies)",
"URL" : "EDM1.fm/Sublime"
},
{
"@" : "http://50.7.77.114:8387/",
"GENRE" : "Tech House",
"TITLE" : "EDM1.fm -- **NEW** Tech House",
"URL" : "http://www.EDM1.fm/TechHouse"
},
{
"@" : "http://50.7.77.114:8540/",
"GENRE" : "Electro, Progressive House",
"TITLE" : "EDM1.fm -- The Drop",
"URL" : "EDM1.fm/The Drop"
},
{
"@" : "http://50.7.77.114:8408/",
"GENRE" : "Trance",
"TITLE" : "EDM1.fm -- Trancemitter",
"URL" : "EDM1.fm/Trancemitter"
},
{
"@" : "http://50.7.77.114:8418/stream",
"GENRE" : "Downtempo",
"TITLE" : "EDM1.fm Chillzone -- Chillout Classics",
"URL" : "http://edm1.fm/chilloutclassics"
}
]
If you open the Properties dialog and view the Properties tab for a playlist entry, you'll see, for example:
File name : EDM1.fm.tags
Folder name : C:\Users\~\Music\MTags
File path : C:\Users\~\Music\MTags\EDM1.fm.tags
Subsong index : 4
File size : 1.23 KB (1 263 bytes)
Last modified : 2014-05-09 14:47:33
Sample rate : 44100 Hz
Channels : 2
Bitrate : 256 kbps
Codec : MP3
Encoding : lossy
Added : 2014-05-09 14:41:55
<@> : http://50.7.77.114:8387/
<@REFERENCED_FILE> : http://50.7.77.114:8387/
<@REFERENCED_INDEX> : 0
<MP3_STEREO_MODE> : joint stereo