Phew... Percy and I just concluded our second live gig in SL. On saturday it was just me playing and on sunday (today) we were both there. We did about the same tracks as on the KM live gig, which included a few covers but mainly our own music. I played for about 45 mins but today we went on for an hour. For a first performance turnout was quite good (avaraging to about ten simultaneous listeners. Response was very positive and have already led to invites for other gigs!
On the technical side, things went reasonably well, although we did have some trouble setting the SL place were we performed to receive the audio stream but that worked ok in the end. To tell a bit more about the setup: I used my desktop to host Winamp with a Shoutcast server plugin. I then rented a SL audio stream with NeoStream (and the funny thing is that I could do this in SL itself). This stream (you can rent streams for a set maximum number of listeners and a set period of time) is accessed by a simple URL and port number which you enter in your Shoutcast plugin. The Shoutcast plugin was then set to transmit the audio that entered the soundcard line in. For the actual music I had my Fantom synth and laptop with Kore 2 set up so the PC with SL running and the Shoutcast plugin was entirely seperate from the music system.
In SL, I had created a stage with keyboards and all to give a visual centerpoint for the music. After the land-owner in SL set his land to receive audio from my stream we could play.
It's really fun. You do get reactions from the crowd - a chat window allows them to react and you also hear things like their applause (well, a sound file consisting of applause if someone has this and triggers it). As for playing, it's about as stressful as any live playing I guess...