Extending alert sounds in AIM 6.0

Hi. This is my first post, and I am real happy to find this forum. I have been using AIM 5.9 for along time and had specific alert sounds allocated for specific people, to notify me when they sign on. This is especially helpful if I am in another room of the house. I can tell who is signing on just by the sound I hear being played.

I just upgraded to AIM 6.0 and I do not see a check box where you can tell it to play sounds for longer than 2 seconds like you could in earlier versions of AIM.

Does anyone know how to extend the sounds in AIM 6.0 like you could in the older versions?

Thanks in advance, and keep up the great work!