Obviously, BonkEnc Portable is the portable version of the BonkEnc program that allows you to extract, convert and encode audio files.
It is a totally free, open source program that allows you to edit and process audio files of the following formats: MP3, OGG, MP4, AAC, FLAC, etc. From BonkEnc Portable you can extract the information from the CDs (ripping them), encode the extracted audios, convert them to other formats, and so on.
BonkEnc Portable is a simple and basic tool, but it will be useful for your first audio extractions and conversions.
You can free download BonkEnc Portable 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.