Stereo to Mono Splitter not Working Properly

Hi all,
Just wondering if anyone had experienced the following problem:
I bought the full version of Cross DJ, and then purchased a stereo to mono splitter, as suggested in the FAQ. Now when I plug it in and change the setting in advanced settings to 'split', as instructed, it only plays out of one headphone and one speaker plus the sub on my 2.1 system.
Any suggestions as to what might be wrong?
Thanks!
BONUS QUESTION - anyone know any software that might let me scan the BPMs on my computer and then transfer them over. Reason being I have over 6,000 songs, so the time it will take to scan them all on my tablet is insane.
Just wondering if anyone had experienced the following problem:
I bought the full version of Cross DJ, and then purchased a stereo to mono splitter, as suggested in the FAQ. Now when I plug it in and change the setting in advanced settings to 'split', as instructed, it only plays out of one headphone and one speaker plus the sub on my 2.1 system.
Any suggestions as to what might be wrong?
Thanks!
BONUS QUESTION - anyone know any software that might let me scan the BPMs on my computer and then transfer them over. Reason being I have over 6,000 songs, so the time it will take to scan them all on my tablet is insane.