.B4S

.B4S file extension

This is the basic program to work with .B4S extension

Winamp

Winamp Winamp playlist file

Winamp player is designed to cover the large area of video and audio media file types available today. The player comes with various types of new skins and visualization styles and is easier to personalize in both menu style as well as preferences , playlists, bookmarks, history, etc... (more)

The program works with the following extensions: mp4, wma, avi, wmv, flv, mpp, mp3, xi, au, it, xm, as, sf, sdc, gmd, mpg, ptm, m4a, w64, sds, hmi, rmi, s3m, m4b, aif, ape, hmp, snd, s3z, m4v, xpl, asf, mpc, hmz, wav, stm, b4s, asx, wax, stz, pls, fla, amf, mss, ult, sd2, mac, mat, far, mus, voc, dts, mp+, cda, xmi, wmx, wal, shn, m2v, itz, aip, wpl, wsz, wlz, m3u, mdz, med, wvx, xmz, mp1, mid, miz, dsm, aac, avr, ogg, mtm, mjf, apl, htk, ogm, vqf, mod, nsa, raw, paf, m4e, mp2, nst, caf, pvf, rmj, wpz, nsv, kar, rmx, cmf, okt, vlb, aiff, mids, flac, midi, mpeg, m3u8, audiocd and 669

.B4S extension is also supported by the following programs:

VLC media player

VLC media player Media file

Pays most multimedia files as well as DVDs, Audio CDs, VCDs, etc.
Zoom Player FREE

Zoom Player FREE B4S Playlist

Zoom Player is a customizable Media Player for your computer.
Anole Media Player

Anole Media Player Winamp playlist file

jetAudio

jetAudio Winamp playlist file

JetAudio Basic is a video and music player but it also can burn CD's,record,etc.
MP3 Stream Editor

MP3 Stream Editor MP3SE Extended B4S Playlist

It is an application to cut, split, edit and join audio files together.