Old hardware, Raspberry pi 1 ro Beaglebone Black

I currently have a node on Rasberry pi 2 with the beta image and works perfect.
Now I am trying to create a second one, with a Raspberry Pi 1 Model B. However seems the CPU juice is not enough and audio is choppy. I also have a BeagleBoneBlack in hand that can be dedicated to this matter.
Can the Raspberry pi 1 work reliable with the ASL Version 1 ? Or should I go with the Beaglebone black? Or Both do work with version 1 of ASL ?

Please advice, as since I have the boards on hand and I would like to use what I have instead of buying (without mention that right now, there is no Pi anywhere at regular price).