The following strings look quite similar, and might be better off merged (though they may well need to be different, in which case, ignore the bug report).

#: ../src/brasero-burn-options.c:338
#: ../src/brasero-data-disc.c:602

"The size of the project is too large for the disc."
"\nYou may want to use this option if you are using 90 or 100 min CD-R(W) which cannot be properly recognised and therefore need overburn option."
"\nNOTE: This option might cause failure."

"The size of the project is too large for the disc and you must remove files from the project otherwise."
"\nYou may want to use this option if you're using 90 or 100 min CD-R(W) which cannot be properly recognised and therefore need overburn option."
"\nNOTE: This option might cause failure."

These strings too:

#: ../src/brasero-multi-song-props.c:85 ../src/brasero-multi-song-props.c:93
#: ../src/brasero-multi-song-props.c:101 ../src/brasero-multi-song-props.c:119
#: ../src/brasero-multi-song-props.c:135 ../src/brasero-multi-song-props.c:156
#: ../src/brasero-multi-song-props.c:169 ../src/brasero-multi-song-props.c:244
#: ../src/brasero-multi-song-props.c:265 ../src/brasero-multi-song-props.c:286
#: ../src/brasero-rename.c:87 ../src/brasero-rename.c:279

"<Keep current values>"

"<keep current values>"