Hello,
Some time ago somebody asked on this forum for software which allows gapless looping of mp3. I can’t find this topic and this software, can anybody help?
Hi Krzysiek,
Try WinLame: https://winlame.sourceforge.io/
There is an option nogap encoding.
I tried it already but still I can hear hiccup 
Hi @RedOctopus
I don’t know about topic, but maybe try Adobe Audition - it’s very comfortable software for these purposes 
That is a good question actually… If I really need to hear something being looped perfectly I usually import it into my DAW, but I haven’t yet found a way outside of it… Interested to see what other will suggest.