• Mpeg Layer I-III (MP3*, MP2, MP1)
• Wave Format (WAV, AIFF)
• Broadcast Wave Format (BWF incl. RF64, BEXT, CART)
• Ogg Vorbis (OGG)
• Windows Media Format (WMA, WMV)
• Free Lossless Audio Codec (FLAC)
• Monkey's Audio (APE)
• Musepack (MPC)
• Advanced Audio Codec (AAC, AAC+, MP4, M4A)*
• Dolby Digital (AC3)*
• Apple Loosless (ALAC)*
• Speex (SPX)
• True Type Audio (TTA)
• Audio CD (CDA)
• MIDI Music
• MOD Music

• MP3 (via external command-line encoder)*
• MP2
• Wave Format (WAV)
• Broadcast Wave Format (BWF incl. RF64, BEXT, CART)
• Ogg Vorbis (OGG)
• Windows Media Format (WMA)
• Advanced Audio Codec (AAC, AAC+, MP4, M4A, via external command-line encoder)*
• Free Lossless Audio Codec (FLAC)
• Musepack (MPC)
• Windows Audio Compression Manager (ACM)
• Any other external command-line encoder

• ProppFrexx Standard Playlist (.pfp)
• Winamp Playlist (.m3u, .m3u8)
• Standard Playlist (.pls)
• iTunes Library (.xml)
• Windows Media Playlist (.wpl)
• Sharable Playlist Format (.xspf)
• Synchronized Multimedia Integration Language (.smil)
• mAirList Playlist Format (.mlp)
• DRS2006 dBase Database Format (.dbf)

* ProppFrexx might leverage the decoding/encoding audio codes as installed on your operating system (e.g. using the Windows Media Foundation libraries respectively the QuickTime libraries). When installed and available with your OS no additional decoding/encoding license is required.
Due to license issues we are not allowed to provide certain command-line encoders (e.g. for MP3 encoding) directly with the product. So it is your responsibility to download/install those encoders manually (e.g. from here).
Please make sure, that you do not infringe any license or patent issues - make sure, that you obtain and own the right to use such formats!