The Systemline Airway solution looks simple enough for DIY implementation, and it does not take up much space since you can integrate it in ceiling etc. But since the system does not have an integrated AirPlay chip at this stage, you have to rely on using it combined with an Airport Express adapter.
The set up includes two speakers (stereo set up) that can be integrated into wall or ceiling, connected by Cat5 cables running to a wall plate, which again connects with the Airport Express using a optical digital cable, and the power supply.
Wouldn't it be great if a system that can be integrated into wall/ceiling came with the necessary set up to avoid having to have too many additional adapters to open up for wireless audio streaming? Perhaps Systemline, or someone else, will bring fully integrated Airplay next.
If you are interested in the Systemline Airway in-ceiling solution you can find out more on their website. Price and availability to be confirmed.