Take a look at this quick snippet of Beethoven’s Ode to Joy:
There are two tempo indicators. You can ignore the tempo indicator (b=140) in the RTTTL. To change the tempo at which the music is played, change the value at the end of the play melody block. To play the RTTTL at its intended speed, just double the tempo indicated in the RTTTL. (That’s why I’m playing this one at 280 beats per minute.)
Here’s the RTTTL text, so that you can copy it and paste it without retyping it.
ode:d=4,o=5,b=140:b,b,b,c6,d6,d6,c6,b,a,g,g,a,b,b.,8a,2a
Just holler if you have any other questions.