Field	Value
Version	1.19.0
Upstream	https://github.com/aria2/aria2
License	GPL-2.0-or-later (SPDX: `GPL-2.0-or-later`)
Source	https://github.com/aria2/aria2/releases/tag/release-1.19.0
Role	Backs `DownloadType: "direct"` (replaces gopeed from v3.5.0-beta.2 onward)

Layout

extra/aria2/
├── darwin/arm64/aria2c
├── darwin/x64/aria2c
├── linux/arm64/aria2c
├── linux/x64/aria2c
├── win32/arm64/aria2c.exe
└── win32/x64/aria2c.exe

The wrapping deps pipeline (scripts/download-deps.ts) copies the correct per-platform binary into .deps/<os>-<arch>/aria2c[.exe] on pnpm deps:download, so the Go Core's BinaryNames[TypeDirect] = "aria2c" lookup finds it at the same location that third-party tools (ffmpeg, N_m3u8DL-RE, BBDown, yt-dlp) land.

License notice

aria2 is licensed under the GNU General Public License, version 2 or any later version (GPL-2.0-or-later). The MediaGo project itself is MIT-licensed; aria2 is redistributed here as an aggregation — MediaGo invokes aria2c as a separate subprocess, not as a linked library, which keeps the GPL boundary at the binary.

The full GPL text ships with each binary (run aria2c --version to see the copyright notice) and is available at: https://github.com/aria2/aria2/blob/master/COPYING

Written offer (GPL-2.0 §3(b))

For any version of aria2 bundled here, the corresponding machine-readable source code is publicly available at the upstream GitHub repository linked above, at no charge. No further steps required from users.

How to refresh these binaries

Fetch the new version's static builds from a trusted static-build distributor (the originals bundled here are from the aria2 GitHub releases on Windows; other platforms use static builds).
Replace each extra/aria2/<os>/<arch>/aria2c[.exe] file.
Update the Version and Source rows above.
Run pnpm deps:download locally to refresh .deps/ and smoke-test a direct download.