What it does:
Sims won't wake up anymore if a stereo that has the "wired house" upgrade is turned on while they sleep.
It will also stop sleeping Sims from waking up if another Sim decides to jam next to them.
Light sleepers Sims won't wake up either if the music is turned on. As for heavy sleepers, I believe they were never affected by this.
Sims will behave normally if a fire starts/a burglar comes by/the alarm clock goes off/Phone rings, meaning that they will wake up, but the "Rude Awakening" buff won't show.
As for Pets, they should behave normally, which means that there's a chance the music will wake them up, and that will make them select another spot to sleep. It shouldn't happen more than once though.
Read more and download at Mell's Little Pixeled World
