Foobar by default uses http seeking.
This can be disabled manually with:
Tools > Advanced > Networking > Allow seeking over HTTP

I think it is a good idea to read the Accept-Ranges header and disable seeking for unsupported web servers.

I think the problem only happens with mp3 files with embedded images.
I assume that foobar tries to seek over the image without knowing if the server supports this feature.

Noted, thanks for the suggestion.

What I have seen so far from different web servers that don't accept ranges, don't send any "Accept-Ranges" header at all instead of a "Accept-Ranges: none".
So responses that don't send an "Accept-Ranges" header should be treaded as "Accept-Ranges: none".

Or in other words only accept ranges if the server send the "Accept-Ranges: bytes" header.