actually...coming from experience with my firm....our client's only demand one thing...a piece of paper called RECEIPT hehehehe but the catch is...in order to apply and secure that pieces of paper (which you order by bulks like 100 pages per booklet , 10 booklets per order,) from the BIR, you'll need a mayor's permit, brgy clearance, locational clearance, fire and sanitary (as of san juan city, ewan ko sa iba hehehe) oh...not to mention sss, pag ibig and all those crap.
you'll be posting them to your main office where you stock your stuff and do paperwork.
may directory ba d2 for all outsource needs? like sounds, equipments, musicians, graphics etc. pero, yun legal din sana. tapos yun hindi pa nakakakuha ng papers...tulungan natin. i guess we have lawyers in the house.
i suggest we have a website for all of these....directory lang and purpose. let's call it SD (Sound directory).com "directory dedicated for people who let their fingers do the jamming" il try to find time and compile all datas i could find
here. suggestion lang po =) also pala, we could include here, the various requirements from different cities in the pinas. that why, we could help din those who want to put up business