About 8 MB, and about 11 MB with the integrated Soundfont for its MIDI playback synthesizer. Native application, no dependencies (no .NET runtime).

Has a big single-click waveform seekbar and three real-time analyzer visualizations by default.

High-end audio cards can be easily used to their full potential without any additional software due to WASAPI (Player and Pro) and ASIO (Pro) support.

WAV, BWF, RF64, AIFF, AIFC, FLAC, APE, ALAC, WV, TTA, DSF, DFF, MP3, MP2, MP1, M4A, MP4, AAC, MPC, MP+, OGG, OPUS, SPX, WMA, WMA Pro, WMA Lossless, MP4, WMV, AVI (certain codecs), MID, RMI, KAR, IT, XM, S3M, MTM, MOD

Most actions can be done without having to double-click. Things like navigating folders, playing files, seeking audio, changing volume are all done with a single-click.