Sibelius

A musical notation program aimed at professionals

Direct MP3 recorder

Record any sound that your speakers play

All2WAV Recorder

Record very easily from any audio source

Apowersoft Free Audio Recorder

Record sounds with your PC

Active Audio Record Component

Add sound recording functions to programs

Audio Record Wizard

Record any audio source in MP3, OGG or WAV

HiRecorder

Excellent audio streaming recorder

Synthesia

Learn how to play the piano while having fun

Finale

Advanced tool to compose scores

MuseScore

Versatile music notation application that's totally free

Encore

One of the best applications for music notation

Cool Record Edit

Maximize your audio recordings' quality

Virtual Audio Streaming

Install a virtual sound card on your computer

Internet Music Capture

Listen to the music that you listen to via Internet

Arial Sound Recorder

A simple tool to record audio

Guitar Pro

Compose your own guitar scores and tabs

VUPlayer

Simple audio player with plenty of options

IP-TV Player

Video player based on VLC to tune into TV channels

KMPlayer

Complete and modern multimedia player free of charge

Media Player Classic

Lightweight and complete clone of Microsoft's player

Windows Media Player 10

Microsoft's multimedia player

PowerDVD

One of the most complete media players

3D Video Player

All your videos in 3D

ACE Stream

Multimedia player based on VLC and compatible with BitTorrent

Vocaloid

Excellent voice synthesizer

Windows Media Player 11

Microsoft's media player for Windows XP and Vista

VLC Media Player

The most stable and versatile multimedia player

iTunes

Apple's multimedia content manager and online store

iTunes Portable

Portable version of the player by Apple

Wiseplay

The multimedia player with IPTV functions

Winamp

The best and most popular MP3 player for PC