is it possible in Centova with multiple instances of Shoutcast server of the same station to run them as a cluster to handle more users under 1 license? (Because it seems that shoutcast runs to a problem after 335 users )

you need to increase the ulimit -n value for the user account used to run the DNAS under (as 335 is normal when you've got that limit at it's default of 1024).

i did its up to 4096, the problem is it goes past 335 and the CPU usages goes crazy after that number. So i'm trying to run at least 5 instances limit at 300 to handle 1500 users at least.