SoundGraffiti Dimmer
SoundGraffit - first really intellectual music light expose with DMX yield.
http://www.soundgraffiti.net/SoundGraffitiDimmer1_0.exe - 3Mb - Download - Screenshot

WinMLS 2000
Perform audio, acoustical and vibrational measurements user-friendly, accurate and flexible using a sound card. WinMLS2000 is widely used by professionals. Now low-cost versions allow the amateur to perform professional loudspeaker and room measurements. ... Calibration of microphone using either calibrator or nominal microphone sensitivity. ... Initial time delay (distance from loudspeaker to microphone) can be measured sample-accurate with all supported sound cards. ... (Swept sine excitation will be included).
http://64.41.85.4/downloadWinMLS/W.../WinMLS2000_Release3Build010c.exe - 8Mb - Download - Screenshot

Tunatic
Love that song but don't know what it is? Tunatic can tag it for you! Tunatic is the first search engine of its kind, identifying a song it "hears" through a Microphone. Tunatic displays the song's title within seconds, along with the name of the artist and many useful links to download the... Tunatic will change the way we listen to radio!
http://www.wildbits.com/files/TunaticSetup.exe - 530Kb - Download - Screenshot

River Past Audio Capture
River Past Audio Capture is a easy-to-use, fast, and powerful audio recording software. Record audio for audio CDs, MP3 players, internet streaming for your favorite video editing/authoring software. It enables you to capture audio from sound card (microphone, line-in, or speakers) or DV... Requires DirectX 8. ... With the optional MOV Booster Pack, you can record to QuickTime MOV audio. ... Record your favorite radio show and listen when you have time. ... 0. ... You can set the start time and/or the stop time.
http://download.riverpast.com/download/audiocapture_setup.exe - 2Mb - Download - Screenshot

Web Page Broadcaster
Broadcast live audio/video from microphone and webcam to all your web pages. Easy to use. Sample HTML page provided with component. Start your webcam and you'll be broadcasting through your web page. Amazing. Great for an online class room. Good way to keep a watchful eye on your kids while at... Great for giving presentations. ... Fantastic for fun.
http://www.versacore.info/WebPageBroadcast/setup.exe - 6Mb - Download

Pocket Voice Recorder
Pocket Voice Recorder is freeware sound recorder that records equally well from microphone and any other input line available with your sound card. Recordings are organized as messages and may be easily exported to standard WAV sound file format.
http://www.xemico.com/pvr/pvr.zip - 1Mb - Download - Screenshot

Music MasterWorks
Music MasterWorks is a MIDI music composing program. Allows you to compose music just by singing into your PC microphone. It will also analyze your singing. You can record, edit, playback and print sheet music as well. Compose in either staff or piano roll notation.
http://www.musicmasterworks.com/MusicM382.exe - 2Mb - Download - Screenshot

Tinynice MP3Recorder
MP3Recorder is a sound record tool, it can records any audio source from your computer to MP3 audio directly without temporary WAV files generated. It supports recording sound source from microphone, Winamp, Windows Media Player, Quick Time, Real Player, etc.
http://www.tinynice.com/mp3recorder/mp3-recorder.exe - 1Mb - Download - Screenshot

Auvisoft MP3 Recorder
Auvisoft MP3 Recorder records sound from any source like sound card, microphone, line-in device (such as Tape/LP) etc. You can use Auvisoft MP3 Recorder to grab any sound including music, dialogs from movies, game sounds etc from your computer. Captured sounds can be real-time saved in MP3, OGG...
http://www.auvisoft.com/amp3reco.exe - 3Mb - Download - Screenshot

Free Ringtones Using Voices and Sounds
Voice2Ringtone lets you use your own voice recording as a ringtone. Use your sound enabled computer with a microphone to capture yourself or surrounding sounds. Edit the sound captured to your liking, then save and upload it direct to your cell phone for use as your new ringtone. ... And use them for free ringtones! ... anything! ... Record your friends, animals, cars, trains...
http://www.monkeybongo.com/downloads/installer_Voice_Ringtones.exe - 894Kb - Download - Screenshot