Playing back 4 channel backing tracks?
Me and my band recently bought a ui24r mixer. We migrated to this new mixer from an 18 channel digital mixer, which was capable of playing back 4 channel WAV files, the 3rd and 4th channel (click track) routed to different channels, very useful and easy way for playing back backing tracks and click tracks simultaniously. Now migrating to the Soundcraft playing back those backing tracks seems quite complicated. According to the user manual I can separate the stereo channels of the 2 channel playback, but in this case the backing track would be in MONO, and that would be quite a step back for us. Using multitrack playback could be an option, but I couldn't find any info on how to prepare the tracks that should be played back synchronized. Is there any way to use 4 channel wav files with separated channels? What would be the best way to use STEREO backing tracks and clicktracks without using any external device?