| apc | A-Pac Compressed Audio |
| ape | Monkey`s Audio File |
| apex | AVM Sample Studio Sound Bank |
| apl | Monkey`s Audio Link |
| aria | Chipsounds Sound |
| ariax | Chipsounds XML Sound |
| asn | Atlantis Word Processor Sound Scheme |
| at3 | Sony ATRAC3 Compressed Audio |
| atp | Sony ATRAC3 Compressed Audio |
| atrac | Sony ATRAC3 Compressed Audio |
| atrac3 | Sony ATRAC3 Compressed Audio |
| au | Sun Audio File |
| aud | Command and Conquer Compressed Audio |
| avr | Audio Visual Research File |
| awb | Adaptive Multi-Rate WideBand Audio |
| axa | Annodex Audio File |
| ay | AY-3-8910 Music |
| aym | Z80 Music Code with AY Music |
| azx | ZX Audio File |
| bbsong | Beepola Song |
| bcs | Sonic Foundry Batch Converter Script |
| bcstm | Nintendo 3DS BCSTM Audio |
| bcwav | Nintendo 3DS Banner Wave Audio |
| bd | Ben Daglish Music |
| bfstm | Mario Kart 8 Binary Cafe Stream Data |
| bfwav | Mario Kart 8 Binary Cafe Wave Data |
| bgw | Final Fantasy XI Music |
| bidule | Bidule Layout |
| bmm | Bleeper Music Maker Music |
| bmw | Buzz Music Without Waves |
