Free Sound InDepth

Sound In Depth is a powerful and easy-to-use audio editing and Converting program with multi-language support. Edit your sounds using cut, copy, and paste features (with unlimited undo functionality), mix tracks, or apply effects to your recordings. Built-in amplitude-envelope editor, a customizable spectrogram mode, a frequency-analysis window for audio-analysis applications, batch open/edit many audio files at the same time such as:MP3,MP2,WAV,WMA,OGG,VOX,G726,RAW,
DSS,CDA,MPC, PCM,GSM and more. Save audio files to the following formats:
MP3, WAV, VOX, OGG, G726, WMA, and RAW, Also Features the ability to edit ID3 Tags of the following file types: WAV, MP3, WMA, and OGG. Record from all available audio sources in your system like microphone, stereo mix, line in and more. The Ability to Mix audio files or insert/append recorded audio into the current file and save the output. Also offers various editing features and a wide range of filters and effects and much more.