This device combines multiple cassettetodigital functions in one unit, offering versatility for listening, digitizing, and editing your tapes. cassette player with a detachable builtin speaker for direct listening on the unit. USB cassette to MP3 converter: convert old tapes to MP3 format, output files to a computer, and play on a computer or music player; you can also burn the MP3s to a CD for storage. Tape player with USB tape converter and editing software: digitize tapes to MP3 and edit recordings with the included software. TapetoMP3 converter: output audio through your own headphones or an external audio speaker. Use scenarios Archive and preserve: digitize a collection of old tapes to MP3 on your computer, then burn important sessions to CDs for longterm storage. listening anywhere: use the builtin detachable speaker or connect headphones for private listening. Quick editing and refinement: record with the editing software to clean up audio, adjust levels, and save improved MP3 files for sharing or archiving.