Like many people,Luanne believes that parents can foster musical ability in small children (out of) playing classical music for them while they are infants.
out of 改成 by,用...方法（培养音乐能力）.
应该用过去分词 traveled ,因为 travel 是不及物动词,现在分词用 traveling 表示 现在或将来,而过去分词 traveled 表示过去.
如果是及物动词,现在分词表主动,过去分词表被动.
要区分清楚.
experiences as 表明是过去.
第2句,不完整,答案不是很肯定.