foobar2000 is an audio player with low memory footprint and native support for most popular audio formats. It includes CD ripping, format conversion, replay gain, audio normalization, equalization and more. Playlist display and keyboard shortcuts are both very customizable. Additional functionality available via a wide variety of plugins.
The program can edit song tags (album and song name, number, year etc.) based on the FreeDB Internet database and even rename the original songs based on these tags. A file format conversion tool is available, but must be enabled with external downloads. Can even fix some MP3s with corrupted file headers.