You may have just got lucky that "1" worked because the L5 only supports an IR frequency in the range of 29 to 58 kHz (check specs) and B&O use a frequency of 460kHz.

For the ones that are repeating you can try swapping the third and fourth word around like this,

1
0000 0009 0000 0016 0067 052f 0067 052f 0067 1b8a 0067 052f 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 105f 0067 15ef 0067 0067

0000 0009 0016 0000 0067 052f 0067 052f 0067 1b8a 0067 052f 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 0ac4 0067 105f 0067 15ef 0067 0067