I agree, the volume on the ads are anoyying. What I have done to work around the issue is put the volume on Spotify all the way up, and then control the volume via the computer speaker volume. This way the ads are the same as your music and you can still adjust the volume of your songs, just through the computer instead of the volume bar on spotify.
It's like you're going to a shop and complaining, that you can't turn down the volume of your new boxes anymore and they tell you to adjust the level of volume by taking distance to your stereo-system.
Spotify is a paid service, either by advertisement or subscription, so thank you for the temporary solution, but please don't tag this bug report as fixed.
Exactly. There is only one true solution: force the advertisers (including Spotify, whose own advertisements are of the same, too-loud offensive nature) to record their ads at a reasonable volume, the same way all TV advertisers are now required to do due to the exact issue discussed here. Short of this solution, all other fixes are just users finding a way to put up with Spotify rather than fully enjoying their Spotify experience.
I still refuse to use Spotify anymore, instead using Amazon Prime and Pandora, because the fact that this is not yet fixed is an indication that Spotify still doesn't care about its customers. Each day I hope that one of these email notifications come to me saying something like, "We at Spotify have heard you, Spotify Community, and have made the changes to our ads to make the listening experience more pleasurable, and less medically destructive, for you." Until that day I remain a once-great fan of Spotify who really wants to come back on boycott.