Download Audio Encoder Codecs :
www.dropbox.com
mega.nz
Install codec until finished
Open RadioBOSS
Setting -> Broadcast -> Advanced -> Custom Encoders
Press menu +
Click ENC1
And you can edit/copy and paste the sample code :
Name :
HE-AAC
Command line :
C:\Program Files (x86)\AudioEncoderCodecs\enc_aacPlus.exe - - --br 64000 --he --silent --rawpcm 44100 2 16
MIME Type :
audio/aacp
You can change the bitrate as you wish:
64000 = 64 kbps
96000 = 96 kbps
128000 = 128 kbps
etc..