diff --git a/examples/r2t2/README.md b/examples/r2t2/README.md
index ee1c143..bed60d7 100644
--- a/examples/r2t2/README.md
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@@ -3,6 +3,9 @@
Transmit data with the PC speaker
+
+ Vid. r2t2 demonstration +
This is a command-line program that encodes short messages/data into audio and plays it via the motherboard's PC speaker. To use this tool, you need to attach a [piezo speaker/buzzer](https://en.wikipedia.org/wiki/Piezoelectric_speaker) to your motherboard. Some computers have such speaker already attached.