your PCs husband died, sorry my bad.... LOL
slow is a subjective term , to me all PCs are slow.
(unless I lay my grimy mitts on them)
How much RAM do you have 1gig?
is your HDD full?
did you upgrade to SSD but wise if fast is your aim,
is the PC infected. ?
is your AV engine running, at least windows defender + free malwarebytes.
what music where, mp3 files in a folder? or what are they?
the extension of the file name matters. mp3 is common,
wav is too but are huge and slow, but best sound of all.
how many are there, 10 or 10,000.?
what player are you using,.?
I'd never touch MS media player ever. not me,?
run fast free players that don't track you.
if most windows screens are fast, and only MP3s are slow
say that first. if all things are slow say that. I can not guess or see you do things. (my PC has over 100apps and runs fast)
try BOOM player free.
https://perkele.cc/software/boom
lean and mean, and supports
: MP3, Ogg Vorbis, FLAC, Musepack (MPC), WavPack, WAV, AIFF, MP4/M4A, WMA.
or get VLC from, French, it runs too fast and not spyware.
I love VLC, as to 100s millions of others.
if all of windows acts slow run CCcleaner, free. find the free on.
defrag your hdd if it is a hdd,
if the hdd is near full , clean it out of old things not need
or clone it to a larger HDD. better to SSD.
safe and (makers page)
https://www.videolan.org/vlc/