Powerline Ethernet Adapter

I have just moved into a new house, ie an old house, but new for us. For reasons not connected with audio we need a computer network, but also for audio since I stream music from a server. I am very tempted to use Powerline Ethernet Adapters and use the electrical wiring for network communication, since it make it unnecessary to draw Ethernet cables all over the house. However, if I understand it right, Powerline Ethernet Adapters use high frequency signals. My question is: will Powerline Ethernet Adapters "interfere" and "pollute" the electrical wiring and electicity in a way that will be negative for audio equipment? Anybody who know something about this? 

i have several Devolo 500 Homeplugs for streaming audio and for connection TV set top boxes etc to the network.  I've not noticed any negative effects.

Chris Firth wrote: If you want reliable high speed network connections then you need a Cat5e or Cat6 installation. That's why companies do not rely on homeplugs.

Thanks for answers.
Of course. Homeplugs are for homes, not for big professional network installations. But the demands in the home and in for example an office are not the same. There is security, reliability and capacity issues, just to mention a few. But I have used homeplugs myself, and they where good enough. I had zero problems considering only my need for transferring data in the home-network.

My question however was put from another perspective. I have thoughts about the possibility that homeplugs induce "high frequency pollution" into the electrical wiring in the hose, and if this can be a problem when it comes to audio equipment. It is not the music files as such I have in mind, but the quality of the electrical power feeding my amplifier and my DAC. There is a debate in audio circles about the importance of "clean" power, and the fact that all devices in use these days "degrade" the electricity we use for our audio equipment.  

Bob & Ifor notice no difference to the sound yet others mention interference on a mains circuit which can affect this. I do not use these devices but logic makes me go with their subjective impressions:

If digital audio is a series of 1's and 0's then surely it either works or it doesn't and unless an analogue signal is being transmitted via the mains, surely this has little or no bearing on digital? I can understand interference causing stuttering or drop-outs but would the actual audio quality change? I am not sure about that

Interference must also apply when streaming via a router as we are surrounded by radio waves, bluetooth, mobile networks, satellite signals etc. My own experience with various Squeezebox devices is that the resulting sound streamed to the main system DAC shows no discernable difference in quality to a direct Cat5 cable connection. The only difference is the occasional annoyance of a drop-out