Switch is a audio file converter for Windows. It can convert mp3, wav or wma format and more to the format of your choice.

~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.

Free version available from NCH Software.

About NCH Software

NCH Software offers more than 80 easy-to-use audio, video, business, and telephony/VoIP software solutions that improve productivity and usability for small businesses and consumers. Focused on specific needs, they produce software with all the bells and whistles of typical brands, but without the complexity. NCH Software provides users with what they need at a price they can afford. This approach generates more than four million unique visitors and nearly three million downloads per month from the company's website -- NCH Software.