Turn matching Mandarin or Japanese and English audio into one sentence-by-sentence listening track.

Bilingual Mix is a browser-based listening tool for language learners. Bring an audiobook, podcast or lesson in Mandarin or Japanese together with its English version. The tool aligns corresponding sentences, lets you choose language order and pauses, and exports a standard MP3 for listening on any device.

Highlights

Sentence-by-sentence bilingual listening
Mandarin and Japanese learning workflows
MP3 export
No sign-up needed for the free trial
Raw audio and transcripts are not stored by the service

Remote MCP server

Bilingual Mix also runs as a remote Model Context Protocol server, so AI agents can build alternating-language practice audio directly.

Endpoint: https://bilingualmix.com/mcp (Streamable HTTP, stateless, protocol version 2025-06-18)
Landing page: English · 中文 · 日本語
Machine-readable description: server.json

For MCP clients that accept remote HTTP servers:

json

{
  "mcpServers": {
    "bilingual-mix": {
      "type": "streamable-http",
      "url": "https://bilingualmix.com/mcp"
    }
  }
}

Tools:

Tool	What it does
`create_bilingual_audio`	Sentence pairs to one A→B alternating track, with a sentence timeline. `dry_run: true` quotes the cost without spending quota.
`align_audio`	Two audio URLs to transcribed, cross-language aligned sentence pairs with timestamps.
`translate_lines`	Fills in the other side when only one language's text is available (members).
`get_quota`	Sign-in state, minutes used and remaining, per-run limits.
`list_plans`	Plans and quotas.

Anonymous calls get a free per-IP allowance (2 runs and 20 minutes a day, up to 10 minutes and 8 sentence pairs per run). When it runs out, the server replies 401 with a WWW-Authenticate resource metadata challenge; clients then sign in through OAuth 2.1 with PKCE (S256), including dynamic client registration, to use their account quota. Discovery documents are at /.well-known/oauth-protected-resource and /.well-known/oauth-authorization-server. A signed-in free account gets 4 runs and 40 minutes a day; a membership gets 500 minutes a month, up to 45 minutes and 30 sentence pairs per run.

Bilingual Mix

What it does

What it costs

Tools

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Highlights

Remote MCP server

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