Extract text from Sprint Music Store audio files (KOZ)
To convert KOZ audio files to another format, you need Sprint Music Store or other Audio software.
To convert other file formats to the "DRM Audio File" file type, you need software like Sprint Music Store or a similar tool.
A .KOZ file is primarily a proprietary, Digital Rights Management (DRM) protected audio format. Historically, it was distributed by the Sprint Music Store, Bell Cellular, and the Audiokoz platform. Under the hood, these files usually contain standard MP3 audio streams enclosed in a restrictive security wrapper. You need legacy mobile carrier software or specific authorized devices to open these files natively.
The .KOZ format is obsolete and extremely limiting. It is a proprietary vendor lock-in format designed specifically to prevent fair use, sharing, or standard playback outside of specific, outdated mobile ecosystems. You cannot play a .KOZ file in modern web browsers, on an iPhone, or in open-source software like VLC media player. Attempting to edit the file directly in audio workstations will fail due to the encryption layer.
To regain access to your purchased music or audio data, you must convert these files. For universal playback across all devices and web platforms, convert to MP3. For Apple ecosystems, convert to AAC. For archival purposes, convert to uncompressed WAV. Note that aggressive DRM may block standard conversion unless the encryption is authorized or legally bypassed. Drag and drop your file to analyze and convert it - free, online, and without installing software.
Use Convert.Guru to open and convert your KOZ file.
Users also converted BOX, APPX and APE files.
If you want to convert KOZ file to MP3, WAV, AAC, FLAC, OGG, WMA, M4A, AIFF, OPUS, ALAC, APE or WV, you can use Sprint Music Store or similar software from the "DRM-Protected Audio Storage" category. In the File menu, look for Save As… or Export….
To convert MIDI, AAC, TTA, AU, WV, DTS, MID, FLAC, RA, MP3, PCM or WAV files to KOZ, try Sprint Music Store or another comparable tool in the "DRM-Protected Audio Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our KOZ converter.