When set to the "Loop" icon, the cassette player will automatically reverse playback or record the A/B side. Manual shutdown is required when you need it to stop. When set to the "single arrow" icon, the cassette player will play or record side A/B. A software download CD is included in the package. Or you can download from the website we provide in the instruction manual. If your laptop or personal computer does not have a CD-ROM, you can download the editing software through the link. Please refer to the detailed instruction manual for easy operation.Reminder note: The sound quality mainly depends on the viability of the tape.For better sound quality, please avoid signal interference.Batteries and cassettes are not included. Retro Audio Walkman Player Auto Reverse 1. Download Software Please Note :