I noticed that when I download a large file over Wi-Fi my Airplay stream stutters and then dies out. I am just streaming audio from MacBook Pro 5,3 (e.g. Spotify) to my Airport Express.
During the download data is coming in at around 6 MB/s, and I see that 200 KB/s is going up.
When I check my Wi-Fi statistics I see I have a transmission rate of 145 (Mb/s I assume), which converts to 18 MB/s so I should have plenty of headroom.
How can I give Airplay priority on my network, such that there's always plenty of bandwidth available to stream?