Rescan missing files like old Winamp

[diegosnip]

Hi, I'm new here, thank you very much for the project, it is amazing. I don't use the Library, this is concerning the Playlist only. I track missing files with red background colour, it works great when launching wacup but there doesn't seem to be a way to detect files that were deleted outisde the app with the app open (there's a setting to scan for missing files each X segs but that would mean to have a timer running all the time and I don't want that). In Winamp, if you move any item in your playlist changing its order, it would detect the missing files and colour them red instantly. Any chance to add some way to redetect missing files and paint them accordingly? it would me amazing if it's automatic when moving items in the playlist and/or playing an item but it could also work with some manual way to do it like pressing F5 or something. Thank you in advance, best regards
EDIT: I'm using modern skin, wacup 1.99.49.24360

[dro]

winamp's missing file mode wasn't a native feature & was done as a hack via my JTFE plug-in. The feature always needed polling to work properly per the playlist -> missing files prefs page. I get that polling isn't ideal but having it re-check on paint events was a problem that caused more issues so I'm going to say I have no plans to change how wacup's implementation works which is different to what was able to be done under winamp & reduces the impact of the polling mode by limiting it to just the currently seen items instead of generically looking at the whole playlist.