I just listen to a live performance (OGG) and I get short gaps between the tracks. This is also happening with FLAC and MP3 files.
This happens whether I use WASAPI or not.
Can you please try without the spectrogram (use the normal position indicator).
If the problem still remains, please share the files with me. (Edit if reproducable then, I will move this to the request related to crossfading since it involves another preload handling and not relying on the buffer in the same way)
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This can happen because gapless playback is not 100% implemented (it relates to cross-fading), so this is not a bug.
You can try to increase the playback buffer which helps in some cases but not all, it depends on where your files are stored.
Subtracks should be fully gapless though, if played in order.
I have tried to force this to happen for a couple of albums now, but with no luck.
No gaps occured for me and it really should not because if you are using WASAPI the playback goes through a mixer which is used to avoid gaps.
If you do not use WASAPI software playback is used and then gaps might occur.
Can you share the problematic album with me for further testing?