if bitrate == 24 then 
                ignore(output_stereo(%fdkaac(bitrate = 24), !source))
            elsif bitrate == 32 then
                ignore(output_stereo(%fdkaac(bitrate = 32), !source))
            elsif bitrate == 48 then
                ignore(output_stereo(%fdkaac(bitrate = 48), !source))
            elsif bitrate == 64 then
                ignore(output_stereo(%fdkaac(bitrate = 64), !source))
            elsif bitrate == 96 then
                ignore(output_stereo(%fdkaac(bitrate = 96), !source))
            elsif bitrate == 128 then
                ignore(output_stereo(%fdkaac(bitrate = 128), !source))
            elsif bitrate == 160 then
                ignore(output_stereo(%fdkaac(bitrate = 160), !source))
            elsif bitrate == 192 then
                ignore(output_stereo(%fdkaac(bitrate = 192), !source))
            elsif bitrate == 224 then
                ignore(output_stereo(%fdkaac(bitrate = 224), !source))
            elsif bitrate == 256 then
                ignore(output_stereo(%fdkaac(bitrate = 256), !source))
            elsif bitrate == 320 then
                ignore(output_stereo(%fdkaac(bitrate = 320), !source))
            end