| gtk | Graoumf Tracker Module |
| gtk1 | Graoumf Tracker Module |
| gtk2 | Graoumf Tracker 2 Module |
| gxg | BOSS GT-10 Patch |
| gym | Sega MegaDrive Music |
| h0 | Magix Movie Edit Pro Audio Data |
| hcom | Macintosh HCOM Audio |
| hd | Sony Playstation 2 SCEI Instrument Set Data |
| hipc | Hippel-COSO Music |
| hm0 | MAGIX Audio Cleaning Lab Waveform Data |
| hma | Sony HI-MD Audio |
| hmi | HMI Audio |
| hrt | Hornet Packer Music Module |
| hsb | HALion Sound Bank |
| hsc | HSC-Tracker Song |
| iaa | INTUS Terminal Audio Archive |
| ibk | Creative Labs FM Banks |
| idd | MIDI Instrument Definition File |
| idf | MIDI Instrument Definition File |
| idsp | Nintendo Gamecube Streamed Audio |
| ikx | iKlax Creator Audio |
| ilb | Scream Tracker 2 Instrument Library |
| ilbc | Internet Low Bit Rate Codec Audio |
| ima4 | IMA 4-bit ADPCM Compressed Audio |
| ime | iMelody Ringtone |
| imelody | iMelody Ringtone |
| imf | id Software Music Format Data |
| ims | IMPlay Song |
| imy | iMelody Ringtone |
| ins | HSC-Tracker Instrument |
| ins | Cakewalk Sonar Instrument Definition |
| ins | EPSDisk Instrument File |
| ircam | IRCAM SoundFile |
| isma | IIS Smooth Streaming Audio |
| ist | Digitrakker Instrument Data |