TL:DR; MP3 Karaoke is a freeware to create karaoke mp3 songs from your mp3 music collections.
MP3 Karaoke is a freeware to create karaoke mp3 songs from your mp3 music collections. MP3 Karaoke is capable of eliminating and removing human vocal voice from the mp3 files.
ImTOO iPhone Ringtone Maker lets you custom your own iPhone ringtone by converting almost all videos/audios and even music bought from iTunes store to M4R ringtone format for iPhone, and upload the ringtone to iPhone directly if you want.
A powerful sound card based multi-function virtual instrument software. It contains Oscilloscope, Spectrum Analyzer, Dynamic Signal Analyzer, Multimeter, Frequency Counter, Data Logger, Waterfall Plot,Spectrogram,LCR Meter,Device Test Plan,Vibrometer
S4B Ringtone Creator is a compact full-featured ringtone composer software which allows you to create your own custom ringtones from any sound, be it your favorite song, a soundtrack from your favorite movie, your friends` voices or your kids laugh.