How do you make ringtones on Windows for your phone using only freeware?
and
(Do we still have to worry about blowing out the speakers nowadays?)

I just wrote this tutorial up (see below) for the Android ng, when I
realized that there may be better ways to make a ringtone for your phone,
from an existing audio recording.
https://groups.google.com/forum/#!topic/comp.mobile.android/HQPTDd0b2-s

==== cut here for how I made the ringtone === the question is how do you?
I'm still confused about the problem and solution so please take this
intentionally helpful post as just a suggestion.

I'm not sure if the problem is:
o finding ringtones
o setting ringtones
o making ringtones

My prior post was on "finding" ringtones on the phone (dir /s/a/l/on/b).

Googling, I found this which purports to help people _set_ ringtones on
their phone to what they want those ringtones to be.
https://www.androidcentral.com/adding-custom-ringtones-and-sounds-your-android

If you want to _make_ a ringtone, bear in mind that it has been said
(somewhere) that you can _damage_ the phone's speakers with a badly
designed ringtone (is that true?).

These Android apps purport to create ringtones:
Zedge, by Zedge
https://play.google.com/store/apps/details?id=net.zedge.android
Ringtone Maker, by Big Bang Inc.
https://play.google.com/store/apps/details?id=com.herman.ringtone

These solutions may help prevent speaker damage if that's really an issue:
https://manual.audacityteam.org/man/tutorial_making_ringtones_and_ivr_messages.html
https://www.groovypost.com/howto/freeware/easily-make-your-own-ringtones-free-audacity/
https://www.lifewire.com/how-to-create-free-ringtones-using-audacity-2438830
etc.

Even if you don't need to prevent damage, this solution below that I tested
on your ringtone is a general solution to make a ringtone out of anything.

1. Download this 3-second 16-bit ringtone from the list I provided earlier:
https://www.redringtones.com/wp-content/uploads/2017/01/our-man-flint-ringtone.mp3
Name: our-man-flint-ringtone.mp3, Size: 46393 bytes
SHA256: F0F400592F50094C4780ECA643E942C66219B24D86BC74AC8F 1EECC3094F2394
2. GSpot freeware identifies the codec as "MPEG-1 Layer 3", 44100Hz 128kb/s
3. MP3Tag freeware shows no ID3 tags, so I added:
Album = ringtone, Title = Our Man Flint, Artist = Our Man Flint
4. Audacity freeware shows it to be a stereo file with some blank spots:
(It says 32 bit float, even though the original web page said 16 bit.)
5. Audacity:Analyze Plot Spectrum (shows a frequency analysis chart)
http://www.bild.me/bild.php?file=4429182ringtone03.jpg
6. Audacity:Effect Equalization (allows you to band pass filter)
o Attenuate to -24dB from 20Hz to 300Hz & from 1000Hz to 20000Hz
http://www.bild.me/bild.php?file=5351927ringtone04.jpg
7. Audacity:Effect Compressor (reduce high:low volume delta)
Change the Ratio from 2:1 to 3:1
Uncheck the [_]Make-up gain for 0 dB after compressing
8. Audacity:Effect Amplify
Change the "New Peak Amplitude (dB)" from 0.0 to -3 (dB) [or -2 dB]
9. Audacity:Tracks Stereo Track to Mono (merges both tracks to mono)
10. Audacity:Effects Fade In (on the first few seconds)
Audacity:Effects Fade Out (on the last few seconds)
11. Trim & time shift (ringtones tend to repeat if less than about 20sec)
[It's really hard to describe because I can't find the "Trim"
selection that is clearly shown in the listed references!]
So if you can figure out why Audacity 2.1.3 doesn't have that
TRIM button, that would help others trim their audio to size.]
12. Audacity:File Export Export Audio myringtone.mp3

I would put all my ringtones in the same Android folder:
/sdcard1/data1/audio/ringtone/myringtone.mp3