Obviously this can be done by going into the LFS/data/mpr or /spr folder and doing it manually, but it would be a whole lot easier if shift or control would affect the file selection in the Replays menu in the game itself (as it affects file selection in Windows). I acumulate a lot of replays and some are worth keeping and some are not, it would be great if I could just select multiple replays and just click delete once and confirm it once. Don't think it's such a big think to ask for and it would improve that menu a bit.

I'm blind, sorry. Maybe it is missing a delete function.

Just read what I wrote. Obviously it can be done from windows explorer but it would be easier to do from LFS, since you dont have to go into 2 folders separatly.

Perhaps LFS Replay Manager can help you.

I'm with the OP. I have auto-save on replays so I end up with hundreds of them.
We shouldn't need a 3rd party program just to hold Shift or Ctrl on the replay selection screen

+1