Are you interested in selling pre-cut ringtones on the mobile iTunes Store? As one of our partners, you are now able to sell your pre-cut ringtones using iTunes .To participate, create a one track album with the ProductClass tag set to RingTone. Normal artwork is required and the audio file must be lossless and be in wave or wavepack format. The minimum length is 5 seconds and the maximum length is 30 seconds. All other normal metadata is required (tags, contributors, P&C lines etc.) Optionally, to reference to the original master song that the ringtone was cut from, you can add the ISRC of that master in the attribute Source_ISRC.