| aria | Chipsounds Sound |
| ariax | Chipsounds XML Sound |
| arl | Aureal Aspen Bank Data |
| arpx8 | TechnoToys Arp-X8 MIDI Arpeggiator Data |
| art | GigaStudio Articulation Data |
| ase | Velvet Studio Sample Data |
| asf | ActiveMovie Streaming Format Data |
| asn | Atlantis Word Processor Sound Scheme |
| asnd | Adobe Soundbooth Audio Data |
| at3 | Sony ATRAC3 Compressed Audio |
| at9 | Sony ATRAC9 Compressed Audio |
| atak | Soundscape Audio-Take Data |
| atp | Sony ATRAC3 Compressed Audio |
| atrac | Sony ATRAC3 Compressed Audio |
| atrac3 | Sony ATRAC3 Compressed Audio |
| atrac9 | Sony ATRAC9 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 |
| ayn | Ayona Compresed Music |
| azx | ZX Audio File |
| bars | Nintendo Switch Binary Sound Archive |
| bbsong | Beepola Song |
| 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 |
| bkcflac | Moo Encrypted FLAC Audio |
| bkcmp3 | Moo Encrypted MP3 Audio |
