Nice! Please use a proper host like Quaketastic:

http://www.quaketastic.com/
Username: quaketastic
Password: ZigguratVertigoBlewTronynsSocksOff

Great choice on the map ;) 

i got a lotsa batch files too
to launch a multiple mods for quake
this is seems handy 

is there a random map command (button)? 

(>';')># 

is there a random map command (button)?
Actually, why not? :)

SQL v1.01:
You can now play a random map from a random mod at random skill.
Folders without maps are no longer shown in the "Game" drop-down.

Download 

Its has happened. Really thanks MadED! 

And, because I'm good at finding bugs right after I've uploaded a new version of something, here's SQL v1.02:

The last map in the "Maps" list was selected instead of a required map when trying to guess the start map.
Duplicate maps are no longer shown in the "Maps" list even if a mod (e.g. Nehahra) contains duplicate maps.

Download 

It's kind of cool how it loads the icon of executable. 

It's a Windows exe. Not a Mac solution.

Again, a simple randmap.bsp file located inside the id1/maps folder, that would launch a random bsp file from a predefined list would be the best solution, IMHO. 

seems to be quite similar to what can be done using Baker's undergate map pack.
http://quakeone.com/files/2-maps/8-undergate-release-2-7-zip/
This pack comes with a launcher map, or a hub of some sort, via which you can easily access all the maps in the pack (mostly the hall of fame maps as rated in the now defunct Underworld Reviews site)

One catch, though, is that the hub map doesn't randomize the accessible maps. You need to manually pick which one map you want to play. Though this can be "randomized" by closing your eyes and walking blindly in the map, until you stumble into one of the teleporters leading to a map. 

It would also help if the -hipnotic and -rogue flags were set for at least hipnotic and rogue mission packs themselves. 

Is there a bulletproof way to detect these packs? Do all quake ports support these flags? Won't they work just by running them like "someengine.exe -game hypnotic / rogue"? 

no, of course not, this is QUAKE!
all nq engines will (qw engines might not).
-game instead of the official/specific argument results in the hud being buggy in most engines. 

and they released only so much of them.

so the launcher simply needs to check the folder name, and if the name is hipnotic, rogue, quoth, or nehahra, then use the relevant commandline accordingly. Not much code needed I would say. 

- Map titles (a map's "message" worldspawn key) are now shown in the "Maps" drop-down.
- Added special handling for hipnotic, rogue, quoth and nehahra mods (based solely on folder names).
- PK3 files are now scanned for maps.

Download 

when I said all nq engines would understand hipnotic/rogue, I meant only hipnotic and rogue. quoth and nehahra are 3rd-party mods and are not guarenteed to be supported in any way - consult engine docs for these. I really have no idea which engines support those two. :s