For a long time I've been a happy user of GV. Although it doesn't receive updates anymore, it's stable and I have no real problems with it, except one, perhaps someone can hint me for a solution.
Every now and then when I plug in my earphone's they are not detected. When I play music it goes through the internal speaker. At first I thought it was a hardware problem but luckily I can solve it by rebooting the phone, so it's probably a software glitch. Perhaps it's a matter of killing and/or restarting a task ?
I too was using GV for a LONG while (certainly compared to how long I had kept other ROMs) I did mod it a little (removed n added some apps and mods - made it a Go4Android phone with matrix style theme basically), but the basics were GV. I had this problem many a time however I found a way of fixing it without a reboot. I do not know if this will work on CM7 nightlys but it did work for me on GV.
Here's what I did.
1)put in headphones. they were not detected. damn.
2)removed headphones
3)pressed home to bring up launcher (go launcher att)
4)killed music app, and winamp and spotify and shavam n soundhound n EQ, and anything like it that i thought might be interfering. Many a time i would just click kill all on the GoWidget, if i wasnt doing anything else.
5)insert headphone quickly before the apps started to relaunch (due to widgets)
6)open music app - (didnt not just click play on widget!) and then press play.
all fine! it didnt always show the icon but it did work.
I am currently using Sandvold's ICS (just about to install 0.4.5 actually) but i remember that. I use my phone as am MP3 player quite alot. lol