From NCH Software
Switch Plus is a professional sound file converter for Windows. It can convert mp3, wav or wma audio file formats to the file format of your choice. Switch sound file format converter is very easy to use. Just add the files you want to convert to the list, select the format you want to use, and then click the convert button. Automatically normalise audio while converting. Access online database to add song information as you convert.
# Automatically normalise audio while converting.
# Access online database to add song information as you convert.
# Import multiple file formats at the same time and convert to one output format.
# Ability to play tracks prior to conversion.
# Import and convert a playlist (m3u and pls).
# Import video files and extract audio (avi, mov, mpeg)
# Add audio files from Windows Explorer from the Right-Click menu.
# Customize your Right-Click converting options to create three different "Quick Convert" options.
# MP3 encoder supports constant or variable bit rates from 8 to 320kbps with optional error correction and stereo modes.
# WAV encoder supports sample rates between 6000 and 196000Hz in PCM as well as a number of other audio codecs.
# Allows up to 32000 files to be converted in one batch.
# Can be run from the command line for automation with other applications.
# Optimized CPU usage and efficient code allows for fastest conversion times.
Works on Windows XP/Vista/7