idoo Add Music to Video is a professional video editor.
The Eclipse Foundation
The Eclipse has a well earned reputation for providing quality software.
A4Desk Flash Music Player.
It lets you add an interactive MP3 music player to your website/CDROM.
Jeaks Music is a toolbar for Internet Explorer and Mozilla Firefox.
This software lets you create digital music albums with pictures and text.
MAGIX Software GmbH
The original for making music - now completely free!
You can create virtual CDROM drives, create and mount ISO images.
Add music and video to your Locker or sync down to your computers.
Aleo Software Inc.
Batch convert MP3 and WAV files to Flash SWF files, add music to your website and blog with ease.
Your personal Digital DJ: you add music and then play it, rate it, or browse it.
Avid Technology, Inc.
Add music to a composition by recording from a keyboard or other MIDI instrument.
Cut and merge videos and photos, add music, and improve colors.
Julian Gabriel Casadesus
Compose music, add effects, write music sheets, see several tracks.
Add visual effects to your music with this add-on for media players.
You can add narration, background music, text, transition animation effects.
A Winamp plugin to add simple Karaoke effect to your music.