Ahh okay...even if I am not sure why you want to use this encoder, since the only advantage of it would be, that it supports MP3pro encoding.
So unless you really need MP3pro encoding, I'd recommend to use lame, as lame uses much less CPU usage.
However...
a) Copy the "mp3sEncoder.exe" file to the ProppFrexx installation folder's '/Encoder' subdirectory.
E.g. "C:\Program Files (x86)\radio42\ProppFrexx ONAIR\3.0\Encoder"
b) then you need to 'activate' this encoder:
- Open the Windows Explorer and navigate to the above folder
- now just make a double-click on the "mp3sEncoder.exe"
- this will display a command-line window
- read the license agreement and follow the steps on the screen
- you need to press <Return> (Enter) a couple of times and finally you need to type "yes" to accept it.
Note: the default license solely grant you the right on any personal computer and solely for non-commercial evaluation purposes.
Else you need to obtain a special license from Frauenhofer!
c) Encoder Setup (general settings, section 'Encoding/Recording', click on the 'Encoder Setup...' button):
As explained here:
viewtopic.php?f=9&t=4
Type in the executable name "mp3sEncoder.exe" into the 'Generic MP3 encoder setup' into the 'Executable' field.
d) Encoder Setup (general settings, section 'Encoding/Recording', click on the 'Define Encoder Profiles...' button):
As explained here:
viewtopic.php?f=9&t=5
Double-click on the 'MP3' entry in the table to define the generic MP3 settings for this MP3 encoder (which now uses the "mp3sEncoder.exe")!
Here you might also specify a target sample rate, e.g. 44100Hz (as you explained above)!
e) Now you can configure your Streaming Servers within ProppFrexx OnAir.
E.g. in the general settings, go to the 'Streaming' section and add a streaming server (by clicking on the 'Add' button).
In the Streaming Server configuration dialog specify your server details and select your 'Encoder Settings', i.e.:
- select the Encoder Profile as defined above
- select the 'MP3' encoder
- and select your streaming source, which is any of the available ProppFrexx mixer channels
That's it.