mac (Monkey's Audio Linux port) mac is a console frontend to Monkey's Audio, able to encode and decode APE audio files. If you're building this for an old x86 CPU that doesn't support MMX, set ASM=no in the script's environment. The package is built using upstream's default optimization level, which is -O3. If you suspect this is causing problems, rebuild with FORCE_SLACK_CFLAGS=yes in the environment (this will force -O2). If this actually fixes anything, please email the maintainer with the details.