Splice problem? Can i fix it? Or similar free app?

I LUV splice. The free verision has exactly what i need except now my videos are black. I use it for viddy. When i make a video on splice & hit view you don't see the video, you can only hear the audio, is there a way I can fix that? I want to stay with the free verison cuz i don't wanna pay $3.99 for the other. If there isn't a way to fix that is there another free video app just like it that i could use for the iphone?

Is unlocking an iphone 4s safe?

I want to use an Unlimited plane from another phone serves so i was thinking about unlocking an iphone 4s but is it safe, does it affect the phone in anyway?

I deleted all my songs off of my itunes?

It was an accident >-< i was trying to download music and I clicked manual settings, and it said that i was connected to a different itunes (but i wasn't, i was on the same account the whole time, i checked 3 times.) and that i need to sync my iphone to that itunes. I backed up my Iphone, and then synced. It said that if i didn't have my music on my itunes, i would have to re-buy it, i only bought a few songs from itunes, the rest i downloaded from the internet. Then i go check my music, and its all gone. I don't know how to get it back! What should i do?

Why can't I watch much YouTube videos on my IPhone sometimes?

Every time I wake up in the morning I sometimes watch YouTube videos cause I'm too lazy to get up and go on my computer in the basement. But sometimes on my IPhone before I watch a video it cancels and says "You do not have permission to access to the requested resource." and it's doing that right now. The thing I mostly stop it with is going on the Safari and searching something. I tried that and the it was the same results. What the heck's going on?

Wi-Fi Disconnects on Iphone 4?

I'm using my iphone 4 as basically an iPod, because it no longer has service. I have Wi-Fi which i use for texting, etc. Sometimes the internet just randomly stops, but the Wi-Fi signal still shows at the top of my phone. I have to continuously go into my settings app and turn off Wi-Fi and turn it back on. I have tried resetting my network settings. Nothing.

Best iPad/iPhone apps for someone who's visiting London UK?

What are the best apps? I see plenty and most charge for the app but I don't wanna buy random apps if they suck.
Also, there's tourist apps but there isn't a specific London visitors section on the iTunes store lol.

Please let me know which are good for the tubes, attractions, happenings etc. And if you've used them yourself.

Is there an iPhone app like this?

I'm trying to find a (recording) app where I can record myself singing but ADD to that specific recording (for like background singing or something like that). Or where I can have 2 recordings to play at once ya know? FREE app is preferred, but if it cost, still tell me the app.