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  3. /Show HN: Play MIDI music files from a folder or ".m3u" play list for Windows
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  2. /Story
  3. /Show HN: Play MIDI music files from a folder or ".m3u" play list for Windows
Nov 24, 2025 at 8:58 AM EST

Show HN: Play MIDI music files from a folder or ".m3u" play list for Windows

blaiz2025
1 points
0 comments

Mood

informative

Sentiment

positive

Category

startup_launch

Key topics

Midi Playback

Windows Software

Music Software

Open Source

Easy to use, portable app to play midi music files on all flavours of Microsoft Windows.

Brief Background - Used midi playback way back in the days of Windows 95 for some fun and entertaining apps, but as Windows progressed, it seemed their midi support (for Win32 anyway) regressed in both startup speed and reliability. Midi playback used to be near instant on Windows 95, but on later versions of Windows this was delayed to about 5-7 seconds. And reliability became somewhat patchy. This made working with midi a real headache.

Cynthia was built to test and enjoy midi music once again. It's taken over a year of solid coding, recoding, testing, re-testing, and a lot more testing, and some hair pulling along the way, but finally Cynthia works pretty solidly on Windows now.

Some of Cynthia's Key Features: * 25 built-in sample midis on a virtual disk - play right out-of-the box * Play Modes: Once, Repeat One, Repeat All, All Once, Random * Play ".mid", ".midi" and ".rmi" midi files in 0 and 1 formats * Realtime track data indicators, channel output volume indicators with peak hold, 128 note usage indicators * Volume Bars to display realtime average volume and bass volume levels * Use an Xbox Controller to control Cynthia's main functions * Large list capacity for handling thousands of midi files * Switch between up to 10 midi playback devices in realtime * Playback through a single midi device, or multiple simultaneous midi devices with lag and channel output support * Custom built midi playback engine for high playback stability * Custom built codebase for low-level work to GUI level * Also runs on Linux/Mac (including apple silicon) via Wine * Smart Source Code - compiles in Borland Delphi 3 and Lazarus 2 * MIT License

YouTube Video of Cynthia playing a midi: https://youtu.be/IDEOQUboTvQ

GitHub Repo: https://github.com/blaiz2023/Cynthia

Discussion Activity

Light discussion

First comment

16m

Peak period

1

Hour 1

Avg / period

1

Comment distribution1 data points
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Based on 1 loaded comments

Key moments

  1. 01Story posted

    Nov 24, 2025 at 8:58 AM EST

    24m ago

    Step 01
  2. 02First comment

    Nov 24, 2025 at 9:14 AM EST

    16m after posting

    Step 02
  3. 03Peak activity

    1 comments in Hour 1

    Hottest window of the conversation

    Step 03
  4. 04Latest activity

    Nov 24, 2025 at 9:14 AM EST

    8m ago

    Step 04

Generating AI Summary...

Analyzing up to 500 comments to identify key contributors and discussion patterns

Discussion (0 comments)

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ID: 46034145Type: storyLast synced: 11/24/2025, 2:00:10 PM

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