vstPlayer is a multi-format audio player designed as a VST instrument plugin, allowing seamless integration with digital audio workstations on both Windows and Mac OS X platforms. It supports a variety of common audio file formats including WAV, AIFF, FLAC, OGG, and MP3, providing users with flexibility in managing and playing back audio content within their projects.

This plugin features a user-friendly interface with essential playback controls such as play, pause, loop, and cue functions, alongside a clear waveform view and seek bar for precise navigation. Additional features include a playlist manager, volume control, and tag display, enhancing the overall user experience. MIDI learn and control options enable customization and synchronization with VST hosts, making it a practical tool for live performance and production environments.

A free edition of vstPlayer is also available, offering basic functionality with some limitations. This version supports only the WAV format, disables commercial use, and restricts playlist loading and MIDI configuration saving. Despite these constraints, it provides a solid introduction to the plugin's capabilities and can serve as a useful audio player for non-commercial and basic playback needs.