>> B4S file

B4S file format description

Many people share .b4s files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .b4s file can be edited, converted or printed with. On this page, we try to provide assistance for handling .b4s files.

1 filename extension(s) found in our database.

.b4s - WinAMP 3 Playlist

The B4S multimedia files are related to WinAMP. B4S file is a WinAMP 3 Playlist.

Multimedia files
- / -
WinAMP 3 Playlist related extensions:
WinAMP Equalizer Preset
WinAMP Links
WinAMP Compiled Maki Script
Music Module MOD
MPEG Audio Layer 1 File
Mpeg-1 Audio Layer 2 File

Naturally, other applications may also use the .b4s file extension. Even harmful programs can create .b4s files. Be especially cautious with .b4s files coming from an unknown source!

Can't open a .b4s file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .b4s file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

b4, bes, brs, bs, bs4, bts

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Combat Mission Shock Force Saved Scenario
Blaise Specification
Adobe RoboHelp Browse Sequence
C64 Printfox/Pagefox Bitmap Image
Bitter End MOBY POS Database
WRAP Beginning-Ending Storage Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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If you have useful information about the .b4s file format, then write to us!

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