1000 FAQs, 500 tutorials and explanatory videos. Here, there are only solutions!
Inserting an advert at the start of a live radio broadcast
It is possible to have the live radio stream start with a pre-recorded advert. This is what is termed a 'pre-roll' in-stream ad (post-roll and mid-roll are not possible for live streams).
The first absolutely essential step is to sign a contract with https://adswizz.com/
AdsWizz will send you the necessary configuration parameters (identifiers, tags, URLs etc).
Contact Infomaniak to enable the AdsWizz option (specifying the stream in question)
Insert the parameters provided by AdsWizz into your control panel under Flash Player -> Advanced settings
Your audio stream will then have the advert inserted at the start.