| tjs | Trackjoy GUS Tracker Song |
| tkm | Panasonic SD Voice Editor Data |
| tl | OpenTL Data |
| tlsd | Digitech Trio Plus Sample Data |
| tm2 | Theta Music Composer v2 Audio |
| tm8 | Theta Music Composer v1 Audio |
| tmc | Theta Music Composer v1 Audio |
| toc | Sony PSP Audio Data |
| tpw | TutorPro Packed Wave Data |
| trk | Mixman Studio Audio Track |
| truehd | Dolby TrueHD Audio Stream |
| tsh | Cenix True Speech HQ Audio |
| tsl | Cenix True Speech LQ Audio |
| tsp | TrueSpeech Compressed Audio |
| tta | True-Audio Compressed Audio |
| tvd | Yamaha Tyros 2 Custom Drum Voice |
| tvml | TV NOW Portable Video Recorder Audio |
| tvn | Yamaha Tyros 2 Voice Data |
| twv | VCM-ROM Linker Voice Data |
| txt | Steinberg LM-4 Audio Bank Data |
| txw | Yamaha TX16W Audio |
| u | AU Audio |
| ub | Unsigned Byte Audio |
| uds | Bitheadz Unity DS-1 Data |
| udw | Raw Unsigned DoubleWord Audio |
| ul | U-Law Compressed Audio File |
| ulaw | U-Law Compressed Audio File |
| ult | UltraTracker Music Module |
| ulw | U-Law Compressed Audio File |
| uni | MikMod UniMOD Music Module |
