Reply to Audio output for digital jockey reloop IE - beginner's question!

Hi,

I'm trying to set up my first midi controller for a bit of bedroom dj-ing. The speakers that I have currently have a single headphone jack input, but the midi controller has a left and right master audio output. Will it be sufficient to get some sort of adaptor to convert the two channels to one or do I need to get some different speakers? I thought I'd ask before trying in case I damaged anything.

Cheers.