Here are some key features of "Fennec":

· Can convert any file from the 'Decoding' list to 'Encoding'.
· Audio CD ripping (to any format in the 'Encoding' list, with easy tagging).
· Joining multiple media into a single (to any format in the 'Encoding' list).
· Highly dynamic plug-ins interface, so you can add/remove plug-ins and edit their settings manually.
· Visualizations, add/remove or make your plug-in.
· Multichannel support (up to 16 channels) for both playback and transcoding.
· A customizable 10 band equalizer for each channel.
· High definition audio processing and output (64bit floating point audio processing, 8bit fixed point-32bit floating/fixed point to 64bit floating/fixed output).
· Tag viewing and editing.
· Formatting file name according to tags.
· Group tag editing (copying and pasting selected tags into many files).
· Equalizers on conversion/ripping and joining.
· Volume and gain adjustments on conversion/ripping and joining.
· Group tagging on conversion (could apply some constant tags into every file converted, artist name etc.).
· Date and time editing on conversion/ripping and joining.
· Editable DSP effects: you can add many effects simultaneously into the playing media and change the order of effects (you can add a bass boost and a reverb at the same time, boost bass before/after reverb etc.).
· Skins (Fennec player doesn't have a user interface itself, it depends on plug-ins you can select to display the user interface).
· Color schemes and manual tints for skins.
· Automatic volume fade up/down.
· Can decode multiple files at the same time (you can keep something playing while doing conversion, a new example for this is 'preview' system).
· File association selection with many options (Fennec player comes with an icon library which has an icon for almost every file format).
· High quality icons for file association settings (256x256 pixel 32bit).
· Multilingual user interface (completely UNICODE user interface so everyone can create a simple text file called a language pack to modify user interface language).
· Highly editable global and local shortcut keys interface.
· Fast and customizable media library.
· Windows shell integration (Fennec player places a context menu item group with open/add options).
· Audio file preview (you can listen to a media file using headphones without interrupting the file which is being played; in order to experience this feature, you need to have two sound cards or multi-streaming enabled sound card).
· Video zoom-in, zoom-out, vertical/horizontal scaling.
· Dual subtitle display - you'll be able to select primary and secondary subtitles for video files, preferably in two languages.
· Window lock feature to keep docked windows permanently attached to the main window.
· Displays media information on Windows Live Messenger.
· Supports reading over 50 subtitle formats and over 10 playlist formats (with Unicode support).