whoops kinda got delayed a lot there anyway for whom is interested I've updated the tree jail audio resource pack
only tree jail audio: click here
and made a pack with some additional extra's: click here
the pack with only tree jail audio is marked as "Slap-gaming tree jail V1.01" (indicating the updated background sounds)
the pack with extra's is marked as "Slap-gaming tree jail V1.02" since I added the extra's at a later date (one of the extra's is a rainbow shooting that the beacon beam is now rainbow colored
!WARNING!: the beam might cause an epileptic attack. hence if you're high risk in this area I recommend removing the beacon_beam.png from the pack (it can be found in the folder under assets/minecraft/textures/entity)
EDIT: many sadness the server does not support my amazing rainbow beam instead we get red lazzah's