Are you getting the sound effect of a spell every 5 to 10 seconds after you started wearing a particular item or being affected by some other mod ?
You are most likely victim of a conflict between mods in which one mod is altering the way some magic effect is working in order to create a new effect, which in turn is causing the new script effect to still use a sound from the original magical effect.
The reason this is happening is because Oblivion has a limited number of magical effects. If a mod needs to create a new effect (such as the Conjurer Boon in Mighty Magick, or a Hunger/Thirst effect for example), there is no other way than altering an existing effect to serve a new purpose.
You’ll either have to disable the interfering mod or if you want to keep it, you will need to get a script effect icon replacer ESP (a lot of flyfightflea’s mods have them packaged with them) and load it towards the end of your list.