This application acts as a frontend to other programs and libraries, and allows conversion between the Wii .brstm format and a variety of other formats.
Supported input formats:
WAV (with or without "smpl" chunk to denote looping audio) MP3, using madplay M4A/AAC, using faad VGM/VGZ, using vgm2wav Any audio format supported by SoX Any audio format supported by vgmstream (including BRSTM and BCSTM)
Supported output formats:
WAV (with "smpl" chunk if the audio should loop; vgmstream can read these loops) MP3, using lame FLAC or Ogg Vorbis, using SoX RSTM (.brstm) and CSTM (.bcstm), using RSTMLib, a subset of BrawlLib
See LoopingAudioConverter/About.html for more information.