help needed with transcoding

hello.
i cannot get 2 step transcoding working.
step 1 is transcoding input with fir filter, output to flac
step 2 is loudnorm with output to mp3 for streaming
i can get everything working in commandline, but i cannot get it working in subsonic menu.
sample from comand line:
ffmpeg -f -i 1.flac -i g:\t4\t4.wav -lavfi afir -map 0:0 out.flac
ffmpeg -f -i out.flac -filter:a loudnorm -q:a 0 out.mp3
any advice?
i cannot get 2 step transcoding working.
step 1 is transcoding input with fir filter, output to flac
step 2 is loudnorm with output to mp3 for streaming
i can get everything working in commandline, but i cannot get it working in subsonic menu.
sample from comand line:
ffmpeg -f -i 1.flac -i g:\t4\t4.wav -lavfi afir -map 0:0 out.flac
ffmpeg -f -i out.flac -filter:a loudnorm -q:a 0 out.mp3
any advice?