Here's a list of songs from the house mix. I'm not sure which one it is you are talking about but you could try listening to all the songs and see which one it is. Hope I helped ^_^
Adam Freeland - Busy
Andy&Lucas - Madre
Andy&Lucas - Mi Barrio
Annie - Chewing Gum
Annie - Heartbeat
Christian Forss - Hubny Harb
Hyper - Sim the Builder
Jeanette - Run with me
Junkie XL - Sims 2 Uni Theme
LUX Spencers - O blay wobba zoon
Musikk Feat John Rock - Summer Lovin'
The Faders - Jump
The Faders - What it takes
Timo Maas - Sims 2 Theme
Victoria - Cry