Way to simultaneously listen to music and maintain phone conversation?

[kylera]

Title says all. With the same headset, is there a way to a. listen to music playing from my MacBook while b. maintaining a hands-free conversation with someone on my iPhone? Basically, is there any such thing as an inverse y-splitter where instead of splitting one source of sound to two earphones, you combine two sound sources (and one mic destination) into one?

Thanks in advance.

 

[bennibeef]

its called a mixer. there are really small ones with 2x stereo channel.
http://www.behringer.com/EN/Products/MX400.aspx

 

[kylera]

its called a mixer. there are really small ones with 2x stereo channel.
http://www.behringer.com/EN/Products/MX400.aspx

I think this may be just it. Would you recommend this particular model?

Sound quality or latency or any of that is completely an afterthought for me right now - I'm no musician.