I did notice that the automatic song rebuild will work on my system IF I delete the SongzW1.bin file from the directory. I reckon that BIAB will look for the presence of that file in the home directory when you click on the Song Button and if it does not exist, it will rebuild it. With 1,100 songs in the directory it takes ~ 4 seconds.

I made a sub-directory off the home directory and COPIED all 1100 songs to that and it took ~ 8 seconds to build the SongzW1 file to show 2,200 songs

Did it again off the Sub Directory and it took ~ 12 seconds to rebuild the SongzW1.bin file to show 3,300 songs

So logically with 6,000 songs it would take around 24 seconds to rebuild the song list.

I can see where with a large amount of files and NO SongzW1.bin file present, it would take an unacceptable length of time.

Now for the kicker: I deleted the sub directories (2200 songs) leaving a total of 1100 songs in the home directory and DID NOT delete the SongzW1.bin file, started BIAB and then clicked on Song Picker and BIAB STILL shows a total of 3300 songs. It did not do an automatic rebuild to show the actual song total off 1,100 songs. To make the actual total right, I had to do a manual rebuild.

The way I am interpreting this, the automatic rebuild will ONLY work if the program DOES NOT see the presence of the SongzW1.bin1 file.

Normally with that option turned off, BIAB will prompt you to rebuild since it sees there is no SongzW1.bin1 file present

In it's present state, for me, I would consider that option not worth the time to use.

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BIAB2025
Windows 10 Pro
WA6NCB
No Longer on a Crappy Laptop!