radio-sound question

[basola]

hi, first time that i work over sounds in il2!

with new fantastic radio upgrade, i'd like create an adequate radio music!
i think that is wonderful sound track make a bomb run with Heavy metal played in radio!
i know, a bit unstorical


so, wichfile sound i need to put in?

read me file say that i must put in a mp3 file with riff and renamed in .wav format, but it doesntwork

so, my questions are:
what is riff? how i can aplly it at mp3 file!
wich quality must have the file? i've used 192kbits, 44100 stereo
i've used sosny studio7, i've used a wrong program??

tnks