Most stores accept a minimum of 16-bit / 44.1 kHz stereo audio (WAV or FLAC preferred for best quality). Tracks should be free of digital clipping (peaks under 0 dBFS) and long enough to count as a real track (usually 30 seconds or more). This checker flags anything that could cause a rejection — before you upload.
Distribute to 150+ stores worldwide with Mazufa — 0% commission, keep 100% of your rights.