alert volume too low After playing with my new USCC TP2, it's been mostly a good experience. Still learning/finding new things it can do. I'm sure many questions will come up as I get further into it. The mose pressing issue so far is the new text message alert. I can't figure out how to get it loud enough to hear. I work in an electronics store-TVs going constantly. I got the old-style phone ringer loud enough to hear for calls, but no luck on texts. The barking dog alert seems to be the loudest, but I miss it about 1/2 the time. The system volume is all the way up. Is there a solution for this? Also, can I use MP3 files on the SD card as alerts/ringtones? Thanks.