the –enable-musepack just parses the metadata for musepack files.
To transcode it, you’ll have to add “mpc” to your ssc_codectypes and then fix the transcoding script to convert mpc to wav.
Truthfully, I don’t know what a mpc file is, what the mpc-to-wav command is, or anything.
I guess I could probably make some musepack files and fix up the transcoding script, huh?