Hi powered remote control for laptop

[stuee]

Hi,
I do a lot of dj'ing for friends and use my laptop with my pa speakers. Im getting over having to go over and either change track or adjust the volume. I started to use bluetooth remote control on my N97 but A) the distance was only about 10m. b) my battery wouldn't last the night.

Is there a way by using a 4 button radio remote that you can purchase from jaycar.com.au to have track forward. pause, vol up and vol down.

Or in the worst case scenario a high powered ir remote to a usb receiver i have and use girder or something, i know it has to be line of sight for this, i would like at-least a 30m distance if not longer.

Any suggestions please share.

Thanks in advance.

Stuee