Here is the low-tech approach I would use. From a command prompt, do dir /b|sort > list.txt
. This produces the list of files in the file list.txt, ordered alphabetically.
Then open the file in Excel, or Google Sheets. The list of file names will appear in column A. In cell B1, enter =RIGHT(A1,LEN(A1)-FIND(".",A1))
, and then copy this to all of column B (or, more properly, for as long as the file names exist); concretely, while on cell B1 press Ctrl-C
, then select the whole column, and press Ctrl-V
. This produces the list of extensions on column B. Then, on cell C1, enter =IF(B1=B2,A1,"")
, and again copy over the whole column. Now on column C you have the list of files with no lrc file (properly, this would also show a file with lrc but no mp3 file).