This is my first post. I recently found out about Max/MSP/Jitter because I was telling a fellow installation artist about a problem I had with an interactive music video that I made in flash. In the video you could use the keyboard to turn off and on members of the band and their respective audio tracks. Flash bottomed out and I had to go with tiny videos because it couldn't handle the 5 instrument layers and a background. Even with this it took an untenable amount of time to load the bloated flash file. So basically I have 6 video layers, all of their alphas are set, so I just need to stack them one on top of the other in a viewer. Using 2- 4MIXRs, I was able to have all 5 instrument layers playing together, I just set it to "+" and set each layer to maximum. THe problem I am running into is getting those to just sit on top of my background layer. It doesn't have any alpha- it didn't need to because the instrument videos all have their alpha set and were filmed in a way that they will not need masking. Does anyone know of a tool for simply stacking videos at full alpha in a VIEWR? It would be great of I can set my BG video to the back most layer and the 2nd 4MIXR to the front layer. Thank you ahead of time, I have been reading the forum a lot it it really seems like an amazing supportive community!