Windows only: Free audio/video conversion utility Oxelon Media Converter handles the task of batch converting music and video files to and from almost any format — and it adds a handy Explorer menu integration to make it easy.
Once you've installed the application and the optional plugin package, you can simply right-click on any audio or video file and choose the file format you'd like to use from the context menu, which will launch the full application where you can tweak the settings — or just click the Conversion button to begin the converting process. Since the Explorer context menu integration doesn't work on 64-bit versions of Windows, you can also just drag and drop the files directly into the interface, and select the media format and quality you would like to use.
During our testing, Oxelon worked flawlessly for converting to and from a number of formats, and most notably is really useful for converting a folder of downloaded Flash video *.FLV files to another format. The converted video quality is excellent, and with good reason, since the whole application is just a shell for the often-used ffmpeg conversion utility.
Oxelon is a free download for Windows, but the context menu integration is 32-bit only. Readers should note that Oxelon has a surprising lack of support for generating the Matroska *.MKV format, and if you head into the Settings you should be able to disable the obnoxious launch of their newsletter page every time you close the application.