Hey I just need some help here.

So i got the IH70 speaker system for my birthday so i can play music in my music room and play guitar/drums at the same time. Basically when i plug it in it says this is not a supported device do you want to switch to airplane mode. Everything seems to work fine, The remote, it charges, plays music fine. Although I do notice when i'm playing a song i can hear something in the background like music playing behind it.

What does this error mean is it bad? should I return this and look into something else? If so what other speaker system do you recomend?

Thanks for your help