Top Donor Sound the same like Donor Sound

[octo]

Hi,

I have the following issue.
If I choose a different Top Donor sound, I hear allways the normal Donor Sound.

Example:
 
Donor Sound = Soundfile a
Top Sound = Soundfile b

I get a 1 € Donation = Soundfile a
I get a 100 € new Top Donation = Soundfile a

What am I doing wrong?

greetings